FoodNet

A text-book of cooking

1915

Page 82

Presented as published in 1915. Historical recipes may not meet modern food-safety standards. Cook from the modern interpretation, not the original instructions.
Mix all the dry ingredients. Put the sour milk and mo- lasses in a mixing bowl. Add the dry ingredients (through the sifter) to the milk and molasses. Melt the fat ; add it to the other materials. Beat thoroughly and turn at once into a shallow oiled pan. Bake in a moderate oven (375° F. to 400° F.) 20 minutes or longer. (See Tests for Sufficient Baking of Quick Bread, p. 197.) 1 The acidity of molasses may be due to fermentation or to the pre- servatives used in many brands. It varies in quantity. LEAVENING AGENTS 199 QUESTIONS Mention the leavening materials used in this Gingerbread, and ex- plain their action. What is the price per quart of molasses ? How many persons does this recipe serve ? LESSON LXVI Leavening with Baking Powder: Griddle Cakes * Experiment 74 : Effect of Cold Water on a Mixture of Cream of Tartar and Baking Soda. — Test a bit of cream of tartar with litmus paper. Is it acid or alkaline in reaction ? - Put J teaspoonful of baking soda and twice the quantity of cream of tartar in a dry test tube. Does any change take place ? Add about 1 teaspoonful of cold water to the mixture and examine. What change takes place ? What substance is being formed ? Experiment 75 : Effect of Hot Water on a Mixture of Cream of Tartar and Baking Soda. — Repeat Experiment 74, using hot water instead of cold with the baking soda and cream of tartar. Which causes greater effervescence, — hot or cold water ? Is it desirable to have more of the gas formed before or after the mixture is placed in the oven ? What, then, should be the temperature (hot or cold) of liquids and other materials used in the quick bread mixtures ? Experiment 76 : Effect of Hot Water on Baking Powder. — Add about 1 teaspoonful of hot water to J teaspoonful of baking powder. Compare the effervescence with that of Experiment 74. From the comparison of Experiments 74, 75, with Experiment 76, what do you infer is the composition of certain baking powders ? From these ex- periments, what conclusion can be drawn with regard to the haste necessary in mixing baking powder mixtures ? After moistening the baking powder, how much time should elapse before placing the mix- ture in the oven ? Composition of Baking Powder. — Baking powder consists of (a) baking soda, (b) an acid substance, and (c) a starchy material. The acid substance varies in different baking powders. Those in common use contain either cream of tartar, acid phosphate, or alum as the acid material. 200 THE COOKING OF FOODS The starch is added to keep the other materials dry, and thus prevent the possible formation and consequent loss of carbon dioxide. The proportion (by weight) of cream of tartar and soda in baking powders is approximately two parts cream of tartar to one part of soda. Since cream of tartar is more bulky than soda (one and one fourth parts of cream of tartar are about equal in weight to one part of soda), the proportion (by measure) of cream of tartar and soda is approximately two and one half parts of cream of tartar to one part of baking soda. The following " equation " represents roughly the action of baking powder when heat and moisture are applied : 1 teaspoonful of baking soda + 2^ teaspoonfuls of cream of tartar yield neutral substance -+- carbon dioxide gas. As in the case of baking soda and sour milk, care must be taken in measuring baking soda and cream of tartar. There should not be an excess of either constituent. If the baking powder is prepared in the home, one must remember that the ingredients must be measured, or weighed, and mixed most accurately.