QUESTIONS
Explain why it is necessary to scald the can, cover, and dasher of an ice cream freezer (see Care of Milk).
What harm sometimes results when an ice cream freezer has been carelessly prepared?
Why should not the salt water be drawn from the freezer during freezing (see Experiment 79)?
What is the purpose of placing paper over the can when packing the frozen mixture?
What is the purpose of covering the packed freezer with carpet, blanket, or newspapers (see The Principle of Fireless Cookery)?
Why is it well to tie heavy paper around an outside metal bucket of a freezer?
Why should "Fruit Ice" mixture be frozen at once after preparing the fruit?
Heat aids chemical action. Can you explain why acid mixtures are not acted upon by the metal and consequently discolored when frozen in a tin or iron can?