Raisins are one of the most nutritious dried fruits in the world. Raisins are cholesterol-free, low in sodium and totally fat-free. They provide many necessary vitamins and minerals, including iron, potassium, calcium and certain B vitamins. Raisins are a good source of fiber and rich in antioxidants. Raisins are 70% pure fructose (a natural form of sugar) which is easily digested for quick energy.
Grapes and tree crops such as apricot, almond, walnut, and pistachio, among many others, are important sources of food and income in much of Afghanistan. Raisins are produced commercially by drying harvested grape berries. In order for a grape berry to dry, water inside the grape must be removed completely from the interior of the cell onto the surface of the grape where the water droplets can evaporate. However, this diffusion process is very difficult because the grape skin contains wax in its cuticle, which prevents the water from passing through.