hazel in biscuits

A hazelnut is the nut of the hazel and is also known as cobnut or filbert nut according to species. A cob is roughly spherical to oval, about 15–25 millimetres (0.59–0.98 in) long and 10–15 millimetres (0.39–0.59 in) in diameter, with an outer fibrous husk surrounding a smooth shell. A filbert...