What is the purpose of placing butter paddles in boiling water before using?

Why hold the paddles over ice water while shaping the butter balls?

LESSON CXV

FORMULATING RECIPES—WAFFLES

LEAVENING FORMULAS.—A practical housekeeper needs to be able to formulate fundamental recipes. In preparing quick bread recipes, she should know the required consistency of flour mixtures, i.e. the approximate proportion of moisture and flour for each bread; and the proportion of leavening, seasoning, and "shortening" (fat) materials to use with flour.

In previous lessons, general statements have been made concerning the quantity of leavening materials to use under various conditions. The following is the approximate amount of leavening material to be used for quick breads that contain little or no sugar:

BAKING SODA AND SOUR MILK

1/2 teaspoonful baking soda to 1 cupful of sour milk

BAKING SODA AND MOLASSES [Footnote 84: See footnote 80.]

1/2 teaspoonful of baking soda to 1 cupful molasses