How Long Do You Boil a Duck Egg?

Duck eggs are larger than hen eggs, and duck eggshells are more delicate. Keeping the eggs at room temperature before cooking reduces the risk of cracking. Hard-boiled duck eggs form a gray line around the yolk if they are not consumed immediately after cooking. Chilling the eggs in a bowl of cold water before peeling is useful to prevent discoloration. Duck egg whites contain more protein than hen eggs, and the yolks contain more fat.