Everything You Need to Know Do Hazelnuts Expire? Hazelnuts, like most nuts, are highly nutritious and rich in healthy fats, but they do have a shelf life. Over time, hazelnuts can expire or become rancid if not stored properly. While they don’t necessarily “expire” in the way perishable foods like milk do, hazelnuts can lose their freshness, flavor, and nutritional value. In this article, we will answer the question: "Do...