In 2021, which country produced 684,000 tonnes of the world production of hazelnuts?

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". They are also known as cobnuts or filberts according to species.

Hazelnuts are used as a snack food, in baking and desserts, and in breakfast cereals such as muesli. In confectionery, they are used to make praline, and also used in combination with chocolate for chocolate truffles and products such as chocolate bars and hazelnut cocoa spreads such as Nutella. They are also used in Frangelico liqueur. Hazelnut oil, pressed from hazelnuts, is strongly flavored and high in monounsaturated fat. It is used as a cooking oil and as a salad or vegetable dressing.

In 2021, world production of hazelnuts was 1.1 million tonnes. The hazelnut production in Turkey accounts for 684,000 tonnes (64%) of the world total, followed by Italy, the United States, and Azerbaijan as secondary producers.