Semisweet or bittersweet chocolate

This is the chocolate most often called for in cake and cookie recipes. 'Bittersweet' and 'semisweet' are often used interchangeably, though bittersweet generally has more chocolate 'liquor' (the paste formed from roasted, ground cocoa beans). Most semisweet chocolate contains at least 35% chocolate liquor, while some fine bittersweets contain 50% or more. Bittersweet and semisweet chocolate have a deep, smooth, intense flavor that comes from the blend of beans used rather than added dairy products. Sugar, vanilla, and cocoa butter are added to the liquor to lend an even richer taste.