If a custard is properly cooked, the egg is in a soft-cooked condition. It exists in a jelly-like mass throughout the milk. The custard has a creamy appearance. If, however, a custard is cooked too much, the egg becomes hard-cooked and the particles of egg appear in "lumps" in the milk mixture. The custard is then said to be curdled.
A curdled custard may be made smooth by placing the upper part of the double boiler in a pan of cold water and then beating the custard at once with a Dover egg beater. This applies to all types of plain custards.
STEAMED OR BAKED CUSTARD
1 pint milk 2 or 3 eggs 1/4 cupful sugar 1/8 teaspoonful salt 2 tablespoonfuls caramel sirup or 1/16 teaspoonful nutmeg
Scald the milk in a double boiler. Beat the eggs slightly, add the sugar and salt, mix. Add the hot milk to this mixture. Strain the mixture, flavor, and pour it into a mold. If steamed custard is desired, steam (without stirring) until the custard is firm. Let the water in the steamer boil gently rather than vigorously. Test for sufficient cooking by inserting a knife into the custard. If it comes out clean, the custard is done.
If baked custard is desired, place the cups of custard in a pan of hot water, and bake in a moderate oven (325 degrees F.) for 35 minutes or until firm. Test as steamed custard.
If a Baked or Steamed Custard is to be turned out of the mold after steaming, 3 or 4 eggs should be used with each pint of milk. By placing a little Caramel Sirup in the bottom of each mold, a custard may easily be turned out of the mold. The custard mixture should be poured very gently on top of the sirup to prevent the custard and sirup from mixing. The caramel also serves as a sauce for the custard when served. (Caramel Sirup may be prepared by caramelizing sugar (as directed in making Peanut Candy) and then dissolving the caramelized sugar in boiling water. Use equal quantities of sugar and water.)
SOFT CUSTARD
1 pint milk 1/4 cupful sugar 2 eggs 1/8 teaspoonful salt 1/2 teaspoonful vanilla
Mix the materials in the same way as for steamed or baked custard. Instead of pouring the mixture into molds, return it to the double boiler and cook (stirring constantly) until it thickens or forms a coating over the spoon. Strain, cool, and flavor. Note that steamed custard is strained and flavored before cooking, and soft custard, after cooking.