How to best store cupcakes?
Yes, you should store them in a air-tight jar, and the best is to store the jar in a cool place in the house. The fridge is to moist for storing cupcakes. You can store them in the jar for about 3-4 days, but they won't taste fresh any more. So I would suggest if you want to store them longer then 1 or maybe 2 days, freeze them right after they cooled down from baking. If you use a topping, you can top your cupcakes when they are thawed.