Brown onions are the most common cooking onion and are best suited for both raw and cooked applications such as dry-roasting, sautéing, grilling, caramelizing, and braising. Known for their use in the classic French Onion soup, brown onions are popularly chopped and used as a flavouring for soups, stews, and stocks.

To store, Brown Onions are best kept in a cool, dry, and dark place with good air circulation. When sliced, Spanish onions will keep up to a week when stored in a sealed container in the refrigerator.