Storage of Fresh Citrus Most citrus will keep at room temperature for several days. For best results, store in the refrigerator, in a plastic bag or in the crisper drawer. The fresh-squeezed juice and grated peel or zest may be refrigerated or frozen, but whole citrus fruit should not be frozen. Unlike other fresh fruits, grapes are harvested only when ripe. Farmers go by color and so should you.
Green grapes are sweetest when bright, yellow-green.
Red varieties have a delicate, tangy flavor when predominantly red-crimson in color. Look for plump berries attached to pliable green stems. Best when chilled, grapes should be refrigerated in plastic bags and rinsed gently in cool water before serving. Pear Selection Apply gentle thumb pressure near the base of the stem. If it yields slightly, it's ripe.