hazel nut

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hazel nut Fruit of the tree Corylus avellana; cultivated varieties include Barcelona nut, cob nut, and filbert (C. maxima). A 50‐g portion (fifty nuts) is a rich source of copper and vitamin E; a source of protein, niacin, vitamins B1 and B2, calcium, zinc, and iron; contains 32 g of fat (most of which is mono‐unsaturated); provides 5 g of dietary fibre; supplies 325 kcal (1300 kJ).