Watermelon seed is one of Sudan's established protein-supplement crops, cultivated in large quantities across the west of the country and exported in significant volume each year.
Every lot is sifted, cleaned to 99% purity, and graded by size and colour: Sadir (8–12mm, brownish, no more than 4% other colours), Farasha (8–12mm, creamy, no more than 4% other colours), Kashair (10–14mm, white), and Jumbo (10–14mm, white). The seed is used for snacking and roasting, pressed for seed oil, ground for cosmetics, used as a bakery garnish, and added to soups and salads.