Sultanas raisins are made with seedless white-fleshed grapes, which makes them juicer than other types of raisins. Since Sultanas are typically coated in an oil-based solution before drying, they don’t have the dark color as normal raisins have but they are somehow brownish. Furthermore, Sultanas are smaller but slightly sweeter than normal raisins. Did you know? Sultana raisin is originated in Turkey. This type of raisin was imported to other countries during the Ottoman Empire.