Store Fall Fruit Salad Thanksgiving Sides in an airtight glass container in the refrigerator for up to 3 days. Keep it at 40°F or colder and avoid freezing because thawed apples and blackberries become soft and release too much liquid. If you need to prepare ahead, keep the dressing separate for up to 24 hours. This salad doesn't need reheating because it is served cold. Before serving leftovers, drain excess liquid if needed and fold in fresh grapes or pecans to refresh the texture. Discard the salad if you notice a fermented smell, slimy fruit surfaces or unusual discoloration.