When Preparing Cauliflower, Onions, White Potatoes, and Turnips, Their Color

Multiple Choice

When preparing cauliflower, onions, white potatoes, and turnips, their color may be further whitened by

A) cooking the vegetable in alkaline water.
B) adding cream of tartar to the cooking water.
C) heating in the presence of copper or iron cooking utensils.
D) None of these are correct.