FoodNet

Experimental cookery

1932

Page 378

Presented as published in 1932. Historical recipes may not meet modern food-safety standards. Cook from the modern interpretation, not the original instructions.
its distribution in the batter can be determined by a microscope. Some of the fat is rather coarsely emulsified, and a good deal is found in layers and pools. Over-cooking of the fat, flour, and water increases the quantity of fat not emulsified. As the egg is added the fat becomes better emulsified, the dispersed spheres becoming smaller. The layers and pools of fat mostly disappear. The secret, and therefore the most important factor, in mixing cream puffs in order to obtain good expansion during baking and a good cavity is to beat the batter while adding the eggs until it is quite smooth, with no suggestions of small lumpy spots. Perhaps this is the reason why some directions for mixing cream puffs advise adding the unbeaten eggs one at a time. Incorporating the eggs one at a time at least insures thorough blending of the first eggs added. However, the eggs can be mixed with the batter as easily or more easily after they are beaten. When the puffs are made in large quantity, more than once the recipe, it is better to cool the paste slightly before the eggs are added because the large amount does not cool as rapidly as a smaller quantity. Some recipes state to cool the dough mixture before adding the eggs. On the whole, much better class results have been obtained by adding the eggs to the dough while it is warm. The probable explanation for this is that the surface tension is lower at the higher temperature and the emulsion forms more readily. If the proportion of water drops below a certain level the tendency for the fat to run from the dough while baking is increased. This may be due to the fat being more easily emulsified in the thinner batter. Sometimes the batter is very thin after the eggs are added, and it spreads and does not hold its shape on the baking sheet. When baked, the puff expands in one layer, giving a puff without a bottom or with a layer across the bottom that is too thin to hold a filling. This thin batter can sometimes be partially remedied by cooking and stirring over hot water in a double boiler until the batter is stiff enough to hold its shape when dropped on the baking sheet. The batter should be stiff enough to hold its shape, yet soft enough to appear glossy, and if forced through a pastry tube should retain the imprint of the tube teeth. The formation of the thin batter is not always due to under-cooking, for the flour, fat, and water may form a stiff ball. The fat is emulsified thoroughly enough to prevent its oozing out of the batter, but something happens that prevents the batter from becoming viscous. Usually, when the egg is first added the batter becomes somewhat thinner, but after being mixed the batter becomes in- creasingly viscous, until incorporation of the egg is complete, just as mayonnaise becomes stiffer as larger proportions of oil are emulsified. Steam is the leavening agent, and the expansion due to the steam pro- duces the cavity in the puff. Eggs are necessary, for their expansion and coagulation during cooking forms part of the framework of the baked puff. If the number of eggs is reduced and the amount of fat reduced at the same time a fair puff may be obtained. If the number of eggs is reduced the fat is not sufficiently emulsified and oozes from the puff as it bakes. As a GRIDDLE CAKES 463