Tomatoes are best stored at room temperature, away from direct sunlight, to preserve their flavor and texture. Refrigeration can make them mealy and diminish their taste.
Tomatoes are a fruit that develops its best flavor and texture when stored at room temperature. When tomatoes are refrigerated, the cold temperatures disrupt the enzymes responsible for ripening and flavor development. This can lead to a loss of volatile compounds that contribute to their characteristic taste and aroma. Furthermore, refrigeration can damage the cell membranes within the tomato, resulting in a mealy or mushy texture. For optimal quality, store tomatoes stem-side down on a countertop, away from direct sunlight, until they are ripe. Once ripe, they can be used immediately or stored for a short period at room temperature. If you absolutely must refrigerate them (e.g., if they are overripe and you want to extend their shelf life slightly), allow them to come back to room temperature before eating to help restore some of their flavor.
Never store tomatoes near ethylene-producing fruits like bananas or apples, as ethylene gas accelerates ripening and can cause them to spoil faster.