Dry periwinkle or winkle is a type of small edible sea snail that adds a delightful crunch and flavor to your African dishes. Whether you use them in soups, stews, sauces, or broths, dry periwinkle will enhance the taste and texture of your meals with its rich, savory, and slightly fishy aroma. Dry periwinkle is also a good source of protein, calcium, iron, and omega-3 fatty acids, and can help lower blood pressure and inflammation.