Since it is best to make the batter right away, I don’t recommend storing this waffle batter. For this reason, don’t start the recipe until you’re ready to cook it. Cooked chaffles store in an airtight container in the fridge for up to 3 days. Over time they will lose the crisp, crunchy texture. Reheat a serving in the toaster, toaster oven, or broiler before eating. You can also store them in a tightly sealed freezer bag for up to 3 months.