When you're serving a fruity drink or spritzer in the summer heat, try freezing your juice base in advance. For grapefruit spritzers, freeze a carton of grapefruit juice until it's a solid block, then cut off the cardboard carton and place the block in your drink dispenser. Decorate with fruit slices and top off with white wine, more juice and some seltzer for fizz. Try this trick with other types of juice and fruit.