Recording restaurant sales is pretty straightforward. Basically, every time someone pays for food, drinks, or anything else, you record that sale (yes, even those random $5 tips you thought you’d forget.) Use your POS system to track sales in real-time. Most systems will automatically keep track of daily sales, so you don’t have to worry about doing it all by hand. Just make sure everything is synced up and that your records match up with the cash in your register.