Historical text (1909). Food left in a retained-heat cooker can cool into the bacterial danger zone (below 140°F / 60°C). Bring food to a full boil first, keep the cooker full, and reheat to boiling before serving if it has cooled.

The Fireless Cook Book · 1909

VII — Table of Proportions

Batters; 1 cupful liquid to 1 cupful flour.

Muffin or cake dough; 1 cupful liquid to 2 cupfuls flour.

Dough to knead; 1 cupful liquid to 3 cupfuls flour.

Dough to roll out; 1 cupful liquid to 4 cupfuls flour.

6 teaspoonfuls baking-powder to 1 quart flour, if no eggs are used; or

11⁄2 teaspoonfuls baking-powder to 1 cupful flour.

1⁄2 teaspoonful soda and 1 teaspoonful cream of tartar is about equivalent to 2 teaspoonfuls baking-powder.

1⁄2 cup liquid yeast equals 1⁄2 dry yeast cake, and 1⁄4 compressed yeast cake.

1 cupful liquid yeast, 1 dry yeast cake, or 1⁄2 compressed yeast cake to 1 pint liquid if bread is raised during the day.

1⁄2 cupful liquid yeast, 1⁄2 dry yeast cake, or 1⁄4 compressed yeast cake to 1 pint liquid if bread is raised over night.

11⁄2 teaspoonfuls soda to 1 pint thick, sour milk.

11⁄2 teaspoonfuls soda to 1 pint molasses.

1 teaspoonful soda to 11⁄2 cupfuls thick, sour cream.

1⁄2 cupful corn-starch to 1 quart milk for blanc-mange.

1 teaspoonful salt to 1 quart soup stock, sauces, etc.

1⁄8 teaspoonful pepper to each teaspoonful salt.

2 to 4 egg yolks to 1 pint milk for soft custards.

2 or 3 whole eggs to 1 pint milk for cup custards.

1 teaspoonful salt to 1 quart water for boiling vegetables, meats, etc.

2 tablespoonfuls flour to 1 cup liquid for white sauces and gravies.

3 tablespoonfuls flour to 1 cup liquid for brown sauces.

Whites of 8 eggs make 1 cupful.

3 teaspoons equal 1 tablespoon.

16 tablespoons equal 1 cup.

2 cups equal 1 pint.