* If you use all bittersweet chocolate- I would add an extra 1/4 cup sugar using 3/4 total. If you use all semi-sweet- I would cut it down to 1/4 cup. Any combination works, just adjust the sugar accordingly. Also: The original recipe suggested baking the cake in a water bath. (Wrapping the pan in heavy duty foil first) I didn't do this, but added a steam pan to the oven instead. My cakes came out perfectly and crack free. I made minis though, and if you make a full sized cake the water bath may be a good idea. Recipe adapted from: All Recipes