Most venues we speak to track twenty things and act on none of them. The four below are the ones that move the bank balance, and they can all be read off one screen before you unlock the door.
Everything else — average spend, covers per hour, cover-to-staff ratios — is diagnostic. Useful once you have a problem, useless as a daily habit. Start with the four, and only add a fifth when one of them has been stable for a month.
Labour percentage
Wages as a percentage of net sales, measured daily, not monthly. Monthly hides the Tuesday where you rota'd for a coach party that never arrived. Daily makes it obvious within a week.
The number itself matters less than its shape. A wet-led pub sitting at 22% and a restaurant at 32% can both be healthy. What is never healthy is a number that moves three points week to week with no explanation.
If you only look at one number, look at labour percentage by day of week. It exposes bad rotas faster than any conversation with a manager.
Gross profit by dish
Not by category. By dish. The category average hides the one item that sells beautifully and loses forty pence every time it leaves the kitchen. Costed recipes make this automatic; without them you are guessing once a quarter.
Sort by units sold multiplied by cash margin, not by percentage. A 55% GP item selling four a week matters less than a 62% item selling ninety.
Wastage
Logged at the point it happens, in a tap, with a reason. Prep waste, spoilage, staff food and comps are four different problems and lumping them together tells you nothing. A venue that logs waste honestly for one month usually finds two percent of turnover.
Voids and discounts by staff member
Not because your team are stealing. Because the outlier is almost always a training issue, and occasionally it is not. Either way you want to know within a week rather than at year end.
Putting it on one screen
If reading these four takes more than a minute, nobody will do it on a Monday. Build one dashboard, pin it, and let the rest of the reporting suite sit unopened until you need it. That is the whole discipline.