Buying in bulk saves money, but how frustrating is it when a funky aroma and wilted greens greet you from the crisper drawer? Try this trick: divide your big container of greens into two to four smaller plastic bags. Place your fist over the opening, blowing through your hand and into the bag to fill it with air (carbon dioxide). Then seal the bag by twisting the top a few times before closing it firmly with a twist tie. Place it in the fridge, and your greens are good to go.