Can cloves be used in corned beef instead of peppercorns?

Yes, cloves can be used in corned beef instead of peppercorns, but they will impart a different flavor profile. Cloves are much more aromatic and sweet, which may alter the traditional taste of the dish. If substituting, use them sparingly to avoid overpowering the other spices. It's best to experiment with small amounts to find a balance that suits your taste.