To store leftover Elote, leftovers can be wrapped in aluminum foil or in an airtight container for up to 3 days. To reheat, place them in the oven at 350 F or on a grill, wrapped, for about 10 to 15 minutes. Alternatively, remove the kernels, sour cream mixture, and seasoning from the cob and store them in a covered container for 2 to 3 days.