Raisin is a dried grape. It is produced in many regions of the world and may be eaten raw or used in cooking, baking and brewing. Raisins are sweet due to their high concentration of sugars. Raisins are produced by drying harvested grape berries. Raisins can be eaten as a nutritious snack. It is rich in dietary fiber, carbohydrates, minerals, vitamins and other micronutrients.