Ketchup in the fridge or the cupboard? Apr 12, 2017 19:54:27 GMT deembastille and RiP, IMDb like this Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by divtal on Apr 12, 2017 19:54:27 GMT In the cupboard. Unless a label instructs "refrigerate, after opening," I store products in the same way that they are presented in the store. I've never seen that instruction on a ketchup container.