Chocolate
Free to read here, from Project Gutenberg.
The Manufacture of Chocolate and other Cacao Preparations
Cocoa and Chocolate: Their History from Plantation to Consumer
Chocolate and Cocoa Recipes and Home Made Candy Recipes
Chocolate: or, An Indian Drinke
A Treatise on Tobacco, Tea, Coffee, and Chocolate
The Natural History of Chocolate
The chocolate-plant (Theobroma cacao) and its products