Ontario Teachers' Manuals: Household Science in Rural Schools

Chapter 5

Chapter 54,067 wordsPublic domain

What food have we on hand for use to-day?

Does this food need cooking? Why?

How shall we prepare it for cooking?

How shall we prepare the oven?

How shall we care for the fire?

How long will it be necessary to cook this food?

(Time the baking carefully and discuss more thoroughly at the close of the lesson.)

How can we tell when it is cooked?

How shall we serve it?

For what meal shall we serve it?

Of what value is it to the body?

_Home assignment._--The pupils should prepare the baked dish at home and at the next lesson report the result of their work.

_Note._--The recipes given in this Manual are prepared for normal times; but in every case the Regulations of the Canada Food Board should be observed, and substitutes used wherever possible.

LESSON II: PREPARING AND SERVING VEGETABLES

_Water and mineral matter in vegetables. How to prepare and serve uncooked vegetables--lettuce, cress, cabbage, etc. Cooking by moist heat. How to boil, season, and serve beet tops, turnip tops, cabbage, sprouts, kale, spinach, mustard, or other vegetable greens._

SUBJECT-MATTER

_Water._--All fluids and tissues of the body contain large quantities of water, therefore water is regarded as one of the most important food-stuffs required by the body. Practically all foods contain some water. Fresh vegetables and fruits provide the body with a high percentage of water.

Water is a valuable medium for cooking. As it heats, small bubbles are formed, which continually increase in number and size, but gradually disappear. Some time before the boiling-point is reached, an occasional large bubble will rise to the surface and disappear. The water has then reached the simmering-point, 185°, a temperature frequently made use of in cooking. When many bubbles form and break, causing a commotion on the surface of the water, the boiling-point, 212°, has been reached.

_Mineral matter._--Mineral matter is a second food-stuff that is needed by the body, but the amount required is very small. If a variety of food is used, there is generally sufficient mineral matter in the diet. Fruits and vegetables, especially fresh green vegetables, are comparatively rich in mineral matter. Mineral matter builds up the bones and certain tissues, such as the hair, teeth, and nails, and regulates the body processes by keeping the blood and digestive fluids in proper condition.

_Green vegetables._--Green vegetables hold an important place in the diet, because they contain valuable mineral matter. They also contain a high percentage of water and considerable cellulose. With few exceptions they should be eaten raw, because the mineral salts, being soluble, are lost in the water in which they are cooked and because the cellulose serves its purpose best in the crisp form. Cabbage is rendered much more difficult of digestion by cooking. Spinach, beet tops, etc., are more palatable when cooked. The delicately flavoured vegetables should be boiled in a very small amount of water, so that they need not be drained. Thus the mineral matter will be retained when the vegetables are served.

PRELIMINARY PLAN

There should be provided for the lesson (from the homes of the pupils or the school garden), some fresh vegetables in season; one that can be cooked by boiling and one that can be served uncooked with a simple dressing.

One of the pupils should write the recipes on the black-board before the lesson hour.

RECIPES

_Preparation of Fresh Green Vegetables_[A]

Wash the vegetables thoroughly, leaving them in cold water to crisp, if wilted. Keep cool until ready to serve, then arrange daintily, and dress with salt, vinegar, and oil as desired, or prepare a dressing as follows:

_Cooked Dressing_

1/2 tbsp. salt 1 tsp. mustard 1-1/2 tbsp. sugar A few grains pepper 1/2 tbsp. flour 1 egg or yolks of 2 eggs 1-1/2 tbsp. melted butter 3/4 c. milk 1/4 c. vinegar

Mix the dry ingredients, add the egg slightly beaten and the butter and the milk. Cook over boiling water until the mixture thickens. Add the vinegar, stirring constantly. Strain and cool.

Note.[A]--It may be well to omit from this lesson the uncooked vegetable that is served in the form of a salad and to give it at some other time. It is not well to attempt to teach more than the pupils can master thoroughly.

_Recipe for Boiling and Seasoning Fresh Green Vegetables_

Wash the vegetables carefully and put them on to cook in boiling water. Delicately flavoured vegetables (spinach, celery, fresh peas, etc.) will require but little water, and that should be allowed to boil away at the last. If spinach is stirred constantly, no water need be added. Starchy vegetables should be completely covered with water, and strongly flavoured vegetables (as turnips, onions, cabbage, and cauliflower) should be cooked in water at simmering temperature.

After the vegetables have cooked for a few minutes, salt should be added, one teaspoonful to each quart of water. Cook the vegetable until it can be easily pierced with a fork. Let the water boil away at the last. If it is necessary to drain, do so as soon as the vegetable is tender. Season with salt, pepper, and butter (1/4 teaspoon salt, 1/8 teaspoon pepper, and 1/2 tablespoon butter to each cup of vegetable).

_Note._--The water in which the vegetables are cooked should be saved for soups and sauces, as it contains most of the valuable mineral matter.

METHOD OF WORK

Discuss the heating of water and apply the facts to cooking. Have the pupils observe and describe the heating of water.

If a new tin sauce-pan or other bright tin vessel is at hand in which to heat the water, the changes which take place as the temperature increases will be more readily apparent, and the pupils will enjoy watching the process.

Discuss why one vegetable is to be cooked and another served uncooked.

Emphasize the cleaning of the vegetable, its structure, composition, and the effect of the boiling water upon it.

After the vegetable has been put on to cook, discuss the method of seasoning or dressing the vegetable which is to be served uncooked, and have it prepared attractively to serve on the plates. Especial emphasis should be placed on the use and importance of fresh, green vegetables.

Continue the discussion of vegetables, letting the members of the class suggest others that may be prepared as salads or cooked in the manner being illustrated, and write the list on the black-board for the pupils to copy in their note-books.

When the cooked vegetable is tender, have it drained, seasoned, and served, and serve the uncooked vegetable at the same time.

When ready for serving, let the pupils arrange their plates and forks carefully, then let them all sit down except the two who pass the vegetables. Be sure that they eat carefully and daintily.

Emphasize the careful washing of the dishes, etc., as on the previous day.

_Questions Used to Develop the Lesson_

How shall we prepare our vegetables for serving?

Of what value is hot water in cooking food?

How must the vegetable be prepared for boiling?

Does this vegetable contain any water?

Will it be necessary to add any more?

Will it be necessary to cover the sauce-pan?

How hot must the water be kept? How can one tell when the water is sufficiently hot?

How can we determine when the food has cooked long enough?

How shall we serve this vegetable?

How does boiling compare with baking--

In the time needed?

In the matter of flavour?

In the amount of fuel used?

In the amount of work necessary?

_Home assignment._--Practice in the boiling and the serving of vegetables.

LESSON III: THE VALUE OF CARBOHYDRATES IN THE DIET

_Potatoes as a source of carbohydrates. The choice, cost, care, composition, food value, and cooking of potatoes, baked squash, steamed squash._

SUBJECT-MATTER

_Carbohydrates._--A third class of food-stuffs required by the body is known as the carbohydrates, or sugars and starches. This class of foods is used as fuel, for the production of heat and energy in the body. Excess of carbohydrates may be stored in the body as fatty tissue.

_Potatoes._--Potatoes are a cheap source of carbohydrates. They are also valuable for their mineral matter and for the large quantity of water which they contain. Three fourths of the potato is water. The framework of the potato is cellulose, which is an indigestible carbohydrate material. Potatoes have only a small amount of cellulose, however, and they are comparatively easy of digestion. When dry and mealy, they are most digestible. When used for a meal, potatoes should be supplemented by some muscle-building food, such as milk, cheese, eggs, fish, or meat.

PRELIMINARY PLAN

At some previous period the teacher should have discussed with the pupils the use of potatoes and learned from them the different ways in which they cook them in their homes. She should determine upon some recipes for the lesson that will increase the variety of ways in which potatoes may be served and that will improve the methods used in the homes.

Each pupil should be asked to bring one or two potatoes for the lesson. The best methods of cooking and the means of securing variety should be emphasized.

RECIPES

_Mashed Potatoes_

6 potatoes 1/4 c. hot milk or cream 1 tbsp. butter 1 tsp. salt

Wash and pare the potatoes, boil, drain, dry, and mash (with a potato masher) in the sauce-pan in which they were cooked. Beat them until very light and creamy; add hot milk, butter, and salt, and beat again, re-heat, and serve. Serves six to eight.

_Browned Potatoes_

Wash, scrub, and pare potatoes of a uniform size. Parboil for 10 minutes, then put in a dripping-pan with the meat or on a rack in a baking-pan.

Baste with fat every 10 minutes, when the meat is basted.

Allow about 40 minutes for the potatoes to cook.

EXPERIMENT TO SHOW THE PRESENCE OF STARCH IN POTATOES

Scrub and pare a potato. Examine a thin cross-section.

Grate the potato. Remove the coarse, shredded portion. Examine.

Examine the liquid and note any sediment.

Heat the liquid and stir until boiling. How has it changed?

Examine the portion of the grater. How has the colour changed? Why?

_Baked Squash_

Wipe the shell of the squash, cut it into pieces for serving, remove the seeds and stringy portion, place in a dripping-pan, and bake in a slow oven for three quarters of an hour (until tender). Serve at once.

_Steamed Squash_

Prepare the squash as for baking, put in a steamer over boiling water, and cook for 30 minutes or until soft. Then scrape the squash from the shell, mash, and season with butter, salt, and pepper.

METHOD OF WORK

Discuss the composition and structure of the potato. Read over and discuss the recipes that are to be used.

Make assignments of work. After the potatoes have been put on to cook, have the class examine a raw potato, following the directions given.[A]

[A] Squash is another vegetable containing a high percentage of carbohydrate. The recipe for squash can be used at this time or in some other lesson.

If one of the recipes requires the use of the oven, be careful to have the potatoes for it prepared first and as quickly as possible. It may be necessary to proceed with another class, assigning one pupil to take charge of the baking. Special attention should be given to the careful serving of the potatoes.

_Home assignment._--Before the next lesson, each pupil should be able to report that she has cooked potatoes at home, using the recipes learned in class.

LESSON IV: FRUITS AND VEGETABLES

_Food value and use of fruits. Reasons and rules for canning. How to can and use such vegetables as beets, beans, tomatoes, and carrots, and such fruits as figs, grapes, apples, and peaches. The drying of fruits and vegetables._

SUBJECT-MATTER

Fruits impart palatability and flavour to other foods and exercise a favourable influence upon the digestive organs, though their food value is low. They contain a high percentage of water and only a small percentage of nutrients. Most fruits are eaten raw and are exceedingly valuable to the body because of the fresh acids they contain. Cooking softens the cellulose of the fruit and, therefore, renders some fruits more easy of digestion. The cooking of fruit is of value chiefly for the purpose of preservation.

_The drying of fruits._--Fruits are dried so that they may be preserved for use. Bacteria and moulds, which cause the decay of fruits, need moisture for development and growth. If the moisture is evaporated, the fruits will keep almost indefinitely. Fruits and vegetables can be easily and inexpensively dried. When dried fruits are to be used for the table, they must be washed thoroughly and soaked for several hours, or overnight, in water, so as to restore to them as much water as possible. They should be cooked, until soft, in the same water in which they are soaked.

_Canning and preserving._--Other methods of preservation are desirable, in order that vegetables and fruits be made of value for a longer period of time than through their ripening season. Canning is one of the methods most commonly employed in the home, being both easy and satisfactory. Fruit which is to be canned is first sterilized by boiling or steaming, in order to destroy all germs and spores. This can be adequately accomplished by boiling for twenty minutes, but a shorter time is sometimes sufficient. In order to ensure complete success, all germs must also be destroyed on the cans and on everything which comes in contact with the food. This will be effected by boiling or steaming for twenty minutes. The jars, covers, dipper, and funnel should all be placed in cold water, heated until the water comes to the boiling-point, boiled five minutes, and left in the water until just before sealing. As for the rubbers, it will be sufficient to dip them into the boiling water. After the fruit has been put into the can, it must be sealed so that it is perfectly air-tight. In order to do this, it is necessary to have good covers, with new, pliable rubbers, and to see to it that they fit tightly.

When the jar is to be filled, it should be placed on a board or wooden table, or on a cloth wrung out of hot water, and should be filled to overflowing.

Sugar is not essential to sterilization and is used only to improve the flavour. Both fruits and vegetables can be canned without sugar. However, fruits canned with a large amount of sugar do not spoil readily, for germs develop slowly in a thick syrup.

_Methods of canning._--The simplest method of canning is the "Open-kettle Method" employed for small, watery fruits, such as berries, grapes, tomatoes, etc. The fruit is boiled in an open kettle (which permits of the evaporation of some of the water in the fruit) and transferred at once to a sterilized jar, which is immediately sealed.

Another and safer method, which secures more complete sterilization without serious change of flavour in the fruit, is that known as the "Cold-pack Method". After being transferred to the cans, the vegetable or fruit is subjected to an additional period of heating of considerable length, or to three periods of briefer length on three successive days. If the three periods of sterilization are used, the process is known as the "Intermittent Method".

The Single Process Method is described in the recipe for canned beets. The Intermittent Process proves more satisfactory for canned beans.

PRELIMINARY PLAN

The teacher should ascertain what fruits and vegetables are most abundant and select for canning those that the class can provide.

Each pupil should be asked to bring some vegetable or fruit, some granulated sugar, and a jar in which to can her fruit. If the school does not possess enough kettles or sauce-pans in which to do the cooking, they may be borrowed from the homes.

Only one fruit or one vegetable should be taken up at a time, for the preparation necessarily varies slightly, and the different methods will prove confusing. It is not necessary to confine the choice of fruits and vegetables to those mentioned in the recipes included here. The teacher will find it better to base her instruction on the products of the particular time and place. The principles of canning should be taken up at some other period, if possible, in order that the cooking lesson may be devoted entirely to the practical work.

RECIPES

_Canned Tomatoes_

(Open-kettle Method)

Scald and peel the tomatoes. Boil gently for 20 minutes. Sterilize the jars, covers, and rubbers. Stand the jars on a cloth in a pan of hot water or on a board or wooden table. Fill the jars with hot tomatoes, being careful to fill to overflowing and to expel all air bubbles from the jar. Adjust the rubbers and covers. Seal and allow to cool. Test, label, and set away in a cool, dry, dark place.

(Cold-pack Method)

Scald in water hot enough to loosen the skins. Plunge quickly in cold water and remove the skins. Pack whole or in pieces in the jars. Fill the jars with tomatoes only. Add 1 level teaspoonful of salt to each quart. Place the rubber and cover in position. Partially seal, but not tightly. Place the jars on a rack in a boiler. Pour sufficient warm water into the boiler to come half-way up the jars. Place the filled jars on the rack so as not to touch one another, and pack the spaces between them with cotton, to prevent the jars striking when the water boils. Sterilize for 22 minutes after the water begins to boil. Remove the jars from the boiler. Tighten the covers. Invert to cool, and test the joints. Wrap the jars in paper to prevent bleaching and store in a cool, dry, dark place. This method of cooking is also called "The Hot Water Bath".

_Canned Grapes_

(Open-kettle Method)

6 qt. grapes 1 qt. sugar 1/2 c. water

Pick over, wash, drain, and remove the stems from the grapes. Separate the pulp from the skins. Cook the pulp 5 minutes and then rub through a sieve that is fine enough to hold back the seeds. Put the water, skins, and pulp into the preserving kettle and heat slowly to the boiling-point. Skim the fruit and then add the sugar. Boil 15 minutes. Put into jars as directed.

Sweet grapes may be canned with less sugar; very sour grapes will require more sugar.

_Canned Peaches_

Choose firm, solid fruit. Scald long enough to loosen the skins. Peel and cut in halves. If clingstone peaches are used, they may be canned whole. Pack the fruit into sterilized jars, fill with boiling syrup (1 c. sugar to 1-1/2 c. water). Then put on the covers loosely and place on wooden racks in the boiler. Sterilize in hot water bath for 20 minutes. Remove the jars and tighten the covers. Invert to cool, and test the joints. Wrap the jars in paper to prevent bleaching; then store.

_Canned Beets_

(Single Process)

Wash the beets and boil them until they are nearly tender and the skins come off easily. Remove the skins and carefully pack the beets in a jar. Cover with boiling water, to which one tablespoonful of salt is added for each quart, and put the cover on the jar, but do not fasten it down. Place the jar on a rack or a folded cloth in a large kettle that can be closely covered. Pour enough water into the kettle to reach within two inches of the top of the jar, cover the kettle, bring the water to the boiling-point, and boil from one and one-half to two hours. As the water around the jar boils down, replenish with boiling water, never with cold. Remove the jars and tighten the covers. Invert to cool, and test the joints. Wrap the jars in paper to prevent bleaching; then store.

_Note._--In canning beets, if vinegar is added to the water in the proportion of one part vinegar to four parts water, the natural bright colour will be retained.

_Canned String Beans and Peas_

(Intermittent Method)

Can on the same day that the vegetables are picked. Blanch in boiling water from 2 to 5 minutes. Remove, and plunge into cold water. Pack in sterilized jars. Add boiling water to fill the crevices. Add 1 level teaspoonful of salt to each quart. Place rubbers and covers in position.

Set the jars on the rack in the boiler and bring gradually to boiling heat. At the end of an hour's boiling, remove the jars from the boiler. Tighten the clamps or rims and set the jars aside to cool until the following day. Do not let the vegetables cool off in the boiler, as this results in over-cooking. On the second day, loosen the clamps or unscrew the rims, place the jars in warm water, heat again to boiling temperature, and boil for an hour; then remove them again. On the third day, repeat the hour's boiling, as on the preceding day.

Corn may be canned successfully in the same way.

_Dried Corn_

Pick the corn early in the morning. Immediately husk, silk, and cut the corn from the cob. Spread in a very thin layer on a board, cover with mosquito netting which is kept sufficiently elevated so that it will not come in contact with the corn, place in the hot sun, and leave all day. Before the dew begins to fall, take it into the house and place in an oven that is slightly warm. Leave in the oven overnight and place out in the sun again the next day. Repeat this process until absolutely dry.

_String Beans_

String beans are hung up to dry and kept for winter use.

METHOD OF WORK

If possible, let each pupil can a jar of vegetables or fruit for her own home. If the class is large, let the pupils work in groups of two or three.

Begin the lesson with a very brief discussion of how to prepare fruit for canning.

Let the pupils proceed with the practical work as quickly as possible. Demonstrate the method of filling and sealing the jars.

Assign the care of the jars and the intermittent canning on succeeding days to members of the class, and hold them responsible for the completion of the work.

The drying of some vegetables can be undertaken at school, and carefully followed from day to day. It will furnish the pupils with an interesting problem.

LESSON V: FATS--VEGETABLES--Continued

_Preparation of white sauce to serve with vegetables. How to boil, season, and serve such vegetables as lima or butter beans, string beans, onions, cabbage, corn, beets, turnips, or carrots._

SUBJECT-MATTER

_Fats._--Butter belongs to the class of food-stuffs known as fats. It increases the fuel value of those dishes to which it is added.

Fats supply heat and energy to the body in a concentrated form. For this reason they should be used in a limited quantity. Fats undergo several changes during the process of digestion, and the excessive use of them interferes with the digestion of other foods and throws a large amount of work upon the digestive organs. Cooked fats are more difficult of digestion than uncooked fats, and other foods cooked with hot fat are rendered more difficult to digest.

_Vegetables._--Vegetables should be used when in season, as they are always best and cheapest then. They are better kept in a cold, dry, and dark place.

If the vegetables contain starch or tough cellulose, they will require cooking; as raw starch is indigestible, and the harsh cellulose may be too irritating to the digestive tract.

In old or exceedingly large vegetables the cellulose may be very tough; hence a long period of cooking is necessary. They should be cooked only until they are tender. Longer cooking may destroy the flavour, render the vegetables difficult of digestion, and cause the colour to change. In very young vegetables the cellulose is delicate and, if young vegetables do not contain much starch, they may be eaten raw.

When cooked vegetables are served, they are usually seasoned and dressed with butter (for one cup of vegetables use 1/2 teaspoonful of salt, 1/8 teaspoonful of pepper, and 1/2 tablespoonful of fat), or a sauce is prepared to serve with them.

PRELIMINARY PLAN