How do you repair chipped enamel cups?

Repairing enamel on cookware or cups cannot be done to food-safe or enamelware standards at home. Repair or refinishing attempts would involve harmful metals or compounds leaching into food. It is safer to discard chipped enamel pots and mugs. Consider the safety of old chipped or rusted objects for home, garden, storage, craft use if they aren't suitable for cooking/serving.