There is little that this versatile nut can't do. It's fine when dried and eaten straight from the tree. It can also be used in any recipe that calls for nuts, and hazelnut is a popular flavor to add to coffee and other drinks. The oil is considered as good as olive oil for cooking, and hazelnut remnants are frequently used as an animal feed. It is also a superior biodiesel feedstock — it is considered superior to even the soybean.