Hazelnut is the nut of the hazel and therefore, includes any of the nuts deriving from species of the genus Corylus, especially the nuts of the species Corylus avellana. It also is known as cobnut or filbert nut according to species.[1] A cob is roughly spherical to oval, about 15–25 mm (0.59–0.98 in) long and 10–15 mm (0.39–0.59 in) in diameter, with an outer fibrous husk surrounding a smooth shell.A filbert is more elongated, being about twice as long as its diameter. The nut falls out of the husk when ripe, about 7 to 8 months after pollination.The kernel of the seed is edible and used raw or roasted, or ground into a paste. The seed has a thin, dark brown skin, which sometimes is removed before cooking.

This pale yellow colored oil, extracted from sunflower seeds, is high in polyunsaturated fats and low in saturates. As very stable oil, Sunflower oil has a long shelf life, without hydrogenation. With a relatively low smoke point, it can be used for shallow frying, cooking and salad dressings. Neutral in flavor and aroma, and its healthy proportions made Sunflower oil popular in kitchens decades ago, and now, Sunflower oil ranks the fourth most used oil worldwide.