There are thousands of varieties of tomatoes in an array of shapes, colors and sizes. The most common shapes are round (Beefsteak and globe), pear-shaped (Roma) and the smaller-sized (Cherry and Grape). Yellow varieties tend to be less acidic than their red counterparts. In the United States today, tomatoes are second in consumption only to potatoes.
Keep Them Cool, Not Cold
Fresh tomatoes are one of those things you should keep out of the refrigerator.
When you refrigerate tomatoes, any ripening you still want to happen will stop because of the cold, which also means you stop the developmentof their flavors. The cold can turn the flesh dry and mealy, and a lot of water content is lost. Since they're delicate, keep them in a single layer to prevent bruising.