Fruits are characterized by being a good source of vitamins and minerals with high water content and low fat and protein. They can be classified by their origin as infructescences, simple fleshy fruits like berries and drupes, or complex fruits like pomes and pepos. Common fruit derivatives include nectars, juices, marmalades made from cooked fruit and sugar, and jellies made from fruit juice and large amounts of sugar. Experts recommend eating at least 3 pieces of fruit per day for their vitamin C content and dietary fiber.