You can add it either way, but the simple sugar works best. Also easiest to stir in, you don't have to try and get it to disolve in the must that way. If you have a hydrometer, you can tell approx. how much alcohol you are going to have by the specific gravity reading you can get. If you don't have a hydrometer, you should think about getting one. It lets you keep track of what is going on with your winemaking. Arne.