Raisins are really dried grapes. The process of drying grapes has been around for thousands of years. The ever-popular Thompson raisins are oval-shaped and chewy, with a burst of sweetness with every bite. Raisins are a convenient, high energy snack which makes it great for snacking on the go, or in between meals. Rich in antioxidants and low in fat, raisins are also great additions to cereals, oatmeal, desserts, and trail mixes.