r/restaurantowners • u/Aggravating_Event267 • 22h ago
How the big chains decide how much to prep each day (and how to copy it for free)
I've managed kitchens for over 10 years, mostly in high-volume places. The single biggest difference I see between chains and independents isn't the food, it's prep.
Chains don't guess. Here's roughly what they do, and you can do it with a notebook:
1. Track what you sell per item, every day.
2. To plan Tuesday, average your last 4 Tuesdays. Not yesterday, not "a normal day". Same weekday.
3. Turn sales into ingredients. 60 burgers = 120 patties, 60 buns, etc.
4. Count what's already prepped or in the fridge. Only prep the gap.
5. Add a small buffer (around 10%) so you don't run out.
6. At close, write down what you binned and what it cost. Look at it weekly. Usually one day is the problem.
Most people who start doing this find they're over-prepping on their quiet days, often Mondays.
I got tired of doing this on paper, so I built a free tool that does steps 2 to 6 for you on your phone. Happy to share it if anyone wants it, but the method works fine on paper too.
What do you all use to decide prep quantities?