It can be eaten warm or cold. Refrigerate any leftovers. Cinnamon/sugar is sold in most grocery stores or you can mix your own: Cinnamon Sugar should be stored in a clean spice jar with a shaker top. To make your own: combine 1/2 cup granulated sugar with 1 1/2 TBSN ground cinnamon. Stir or shake it thoroughly to blend it well. Store airtight at room temperature. .