Another name for a filbert is a hazelnut; filberts are the state nut of Oregon; and a 1/4-cup serving of filberts has about 180 calories. Filberts are a common addition to baked goods, candy and desserts. They also feature in liqueurs and coffee flavorings, and they pair well with lamb in savory dishes. Another use is in animal feed.
The name filbert came from French settlers to the United States who brought filbert trees and nuts with them from France. An ancient Chinese manuscript from 2838 B.C. mentioned the filbert as one of five foods furnished by the gods for humans. The Greek physician Dioscorides also wrote about filberts in ancient times prescribing medicinal properties to the nut.
Filbert trees produce crops until they are over 80 years old. Filberts bloom and pollinate in the winter months. The fruit remains dormant until the warmer summer months when it ripens. The nuts fall from the trees in September and October for harvesting.
One cup of filberts has 70 grams of fat, 19 grams of carbohydrate and 17 grams of protein. Filberts are a good source of fiber, monosaturated fats, manganese, magnesium and iron. They also provide the vitamins: thiamine, folate, niacin, E and K.