When you bite into a true vine-ripened tomato - the kind you can only get in the late summer - you'll remember the tomato flavor you'd completely forgotten the rest of the year. You'll find colorful heirloom varieties as well as pristine extra-sweet red globes. Use a serrated knife to cut tomatoes without squishing them and look for firm, bright, and tomato-smelling tomatoes - the hydroponic vine-ripened ones available year-round have these same qualities but the flavor won't be nearly as good. And, remember to never refrigerate tomatoes as it will destroy both the flavor and the texture.