As for ingredients that are similar, we find that both are made of at least 35 percent chocolate liquor, cocoa butter, sugar, vanilla and lecithin.
Bittersweet bars usually have a deeper chocolate flavor than those labeled "semisweet," and they are apt to be less sweet, however the amount of sugar they contain is not regulated. These chocolates may be interchanged in most recipes, but their differences can affect the flavor, texture and appearance of the finished product. Bittersweet is good for icings, sauces, fillings and candy dipping because of its sheen when it is tempered and melted.
Enjoy your chocolate this valentines ... oh and don't forget about our Chocolate Decadence muffins! They're "to die for"!