Hazelnuts, also known as filberts or cobnuts depending on the variety, are the edible nuts of the hazel tree, primarily from the species Corylus avellana.
Like almonds, they have a relatively low moisture content and a high oil content, giving them a good shelf life when stored correctly.
To maintain freshness, hazelnuts should be kept in a cool, dry place, away from heat and light. Airtight or vacuum-sealed packaging is ideal to protect them from oxidation and pests. When properly stored, hazelnuts retain their rich flavor and nutritional quality for extended periods.