One of the best bittersweet chocolate bars is Trader's Joe's Pound Plus 72 Percent Dark and the best bittersweet chips are Ghirardelli 60 Percent Cacao, recommends Real Simple magazine. The legal definition of bittersweet chocolate is chocolate that contains at least 35 percent pure chocolate. Good quality bittersweet chocolate typically contains at 60 to 85 percent pure chocolate.
Bittersweet chocolate is known as dark chocolate among European brands. It can be eaten or used in baking. Some people may substitute bittersweet chocolate in recipes that use semisweet chocolate, depending on taste preferences. Other good quality types of bittersweet chocolate include Lindt 85 percent Cocoa, Pierre Marcolini, Green & Black's Dark 70 percent and Lindt Ecuador, notes Cacaoweb.