Chicken eggs are widely used in many types of cooking. Recipes that use eggs include sweet and savoury dishes. Eggs can be used and cooked in many different ways. They can be hard-boiled, soft-boiled, scrambled, fried, combined with flour in cakes or eaten raw. Roasted eggs are used at the Jewish holiday of Passover. Pickled eggs are hard-boiled and then put in vinegar. They are often sold in UK fish and chip shops.