The hazelnut is the fruit of the hazel tree and therefore includes any of the nuts deriving from species of the genus Corylus, especially the nuts of the species Corylus avellana. Hazelnuts are used in baking and desserts, confectionery to make praline, and also used in combination with chocolate for chocolate truffles and products such as chocolate bars, hazelnut cocoa spread such as Nutella, and Frangelico liqueur. Hazelnut oil, pressed from hazelnuts, is strongly flavored and used as a cooking oil. Turkey and Italy are the world's two largest producers of hazelnuts. Hazelnuts are relatively richer in vitamins than almonds. It has nine times more Vitamin A, three times more Vitamin B6, and two times more Vitamin B1. They are also richer in Vitamin C, Vitamin K, Vitamin B5, and folate.