Chocolate and cocoa are derived from cocoa or cacao beans. When the beans are roasted and ground, the resulting product is called chocolate liquor, which contains a white or yellowish fat called cocoa butter.
Cocoa is the dry powder that remains after part of the cocoa butter is removed from chocolate liquor.
Dutch process cocoa is processed with an alkali. It is slightly darker, smoother in flavor, and more easily dissolved in liquids than regular cocoa.
Bitter or unsweetened chocolate is straight chocolate liquor. In some less expensive brands, some of the cocoa butter may be replaced by another fat.
Sweetened dark chocolate is bitter chocolate with the addition of sugar in varying amounts. If the percentage of sugar is low, it is sometimes called semisweet or bittersweet.
Milk chocolate is sweet chocolate with the addition of milk solids. It is used primarily in candy making. (None of the recipes in this book call for milk chocolate.)