Jessie Conrad 
Handbook of Cookery for a Small House [EPUB ebook] 

Excerpt: "Cooking ought not to take too much of one’s time. One hour and a half to two hours for lunch, and two and a half for dinner is sufficient, providing that the servant knows how to make up the fire in order to get the stove ready for use. Most girls will quickly learn to do that and how to put a joint properly in the oven. For my part I never went into the kitchen before half-past eleven for a half-past one lunch of three dishes. But once the cooking is begun one must give all one’s attention and care to it. No dish, however simple, will cook itself. You must not leave the kitchen while the cooking is going on-unless of necessity and only for a very few minutes at a time."