(CNET) - Wine may come in conveniently sized bottles, but sometimes those 750 ml can be too much. Especially after the first 750 ml. Opening a second bottle of wine takes careful consideration. Not surprisingly, these considerations can be somewhat clouded. We are talking about another bottle of wine, after all. Yet, despite these hesitations that commonly vex oenophiles, the real question isn't whether to open the bottle, but what to do with it after.