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Hazelnuts are rich in protein and unsaturated fat. They also contain significant amounts of manganese, copper, vitamin E, thiamine, and magnesium. [18] Common hazel is cultivated for its nuts in commercial orchards in Europe, Turkey, Iran and Caucasus. The name "hazelnut" applies to the nuts of any of the several species of the genus Corylus.
Tiny filaments protrude from the husk and may stick into, and irritate, skin that contacts them. The spherical nuts are small and surrounded by a hard shell. The beaked hazel is the hardiest of all hazel species, surviving temperatures of −50 °C (−58 °F) at its northern limits.
The American hazelnut grows to a height of roughly 2.5 to 5 m (8 to 16 ft), [6] with a crown spread of 3 to 4.5 m (10 to 15 ft). It is a medium to large shrub, which under some conditions can take the like of a small tree.
The state produces 99% of the nation's filberts or hazelnuts, with the preferred name depending on who you ask. Oregon's state nut has two different names. Why is that?
A nut is a fruit consisting of a hard or tough nutshell protecting a kernel which is usually edible. In general usage and in a culinary sense, many dry seeds are called nuts, but in a botanical context, "nut" implies that the shell does not open to release the seed (indehiscent).
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Cracked hazelnut shell displaying the edible seed Hazelnut tree, Turkey. A hazelnut cob is roughly spherical to oval, about 15–25 millimetres (5 ⁄ 8 –1 inch) long and 10–15 mm (3 ⁄ 8 – 5 ⁄ 8 in) in diameter, with an outer fibrous husk surrounding a smooth shell, while a filbert is more elongated, being about twice as long as its diameter.
Peel, also known as rind or skin, is the outer protective layer of a fruit or vegetable which can be peeled off. The rind is usually the botanical exocarp , but the term exocarp also includes the hard cases of nuts , which are not named peels since they are not peeled off by hand or peeler, but rather shells because of their hardness.