Cobnut, which is also known as filbert or hazelnut, is a small, round, and edible nut that is often used in cooking and baking. These nuts can be roasted, chopped, or ground to add a rich nutty flavor to a variety of dishes. Hazelnuts are commonly used in confectionery, like chocolate truffles, and are also used in traditional British desserts like praline. Filberts are often eaten raw or roasted, and are commonly used in salads, pastries, and cakes. Other synonyms for cobnut include filbert hazel, hazel nut, and nut filbert. Whatever you call them, these nuts are a delicious and nutritious addition to any meal.