Ketchup in the fridge or the cupboard? Mar 20, 2018 14:17:45 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by sweetpea on Mar 20, 2018 14:17:45 GMT Fridge after opening, but because we use it maybe once/twice a year. You can keep it in the cupboard after opening. But since they've cut the salt, it won't last quite as long.