How to Teach Staff the ‘Why’ Behind Food Cost and Waste

Here's what I've learned after thirty years of running restaurants: people don't protect what they don't understand. If a cook thinks food cost is just management's way of being cheap, he's going to keep throwing a handful of cheese on top of a plate because it looks better that way. He's not being malicious. He just doesn't know what that extra handful costs at scale.

So stop posting memos. Start talking in dollars.

The thing that actually changed behavior in my kitchens was the day I stopped saying "we need to watch our portions" and started saying "we did $18,000 in food sales last week and $6,800 of it went to food cost. That means we have $11,200 left before we pay a single person, a single utility bill, or anything else." When people hear it that way, their eyes change. It's not abstract anymore.

Now take it one level further. At a busy wing spot, a typical wing order is maybe 12 wings. If your cook consistently drops 14 because he's eyeballing it and it "looks right," you're over-portioning by 16%. On a Saturday night where you're moving 200 orders, that's 400 extra wings walking out the door. At current chicken prices, that can be $80 or more in one shift. Three shifts a week, fifty weeks a year. You do that math. It's not nothing.

The bar side is where I see operators leave the most money behind. An over-pour on a standard cocktail of even a quarter ounce sounds microscopic. Pour that consistently across 150 drinks on a Friday night and you've given away roughly a bottle and a half of liquor for free. That's before you factor in the comp drinks that never get rung or the "friendly" shot at the end of a tab. I'm not saying your bartenders are stealing. Most of the time they're just trying to take care of people. But they're doing it with your money, and they don't fully realize it because nobody ever showed them the math.

This is the conversation I'd encourage every operator to have, not once but regularly, and not in a punitive way. Sit down with your crew and walk them through a simplified P&L. You don't need to show them everything. Just show them the part that matters to their daily decisions. What did we sell? What did the ingredients cost? What's left? Then show them what happens to that "what's left" number when portions drift.

I call it the margin reality talk, and it works because it replaces a rule with a reason.

When a server understands that a comp isn't free, that it comes directly out of whatever thin margin you're operating on, they think twice before throwing it at a table because they feel uncomfortable addressing a complaint. They'll still take care of the guest. But they'll do it intentionally instead of reflexively. That's a different employee. That's someone who's starting to think like a partner in the business.

One thing I'd add: don't frame it as "us vs. waste." Frame it as "this is where our money goes, and together we can decide to keep more of it." The difference in how that lands is significant. Nobody shows up to work wanting to be lectured about what they're costing the company. But most people, especially people who genuinely like their job and their team, will change their habits when they understand what's actually at stake.

In our own spots we started rolling food cost conversations into pre-shift about once a month. Not every night, that would get old fast. But once a month, quick, three to four minutes, specific numbers from the last period. What we hit, where we drifted, what we think caused it. Sometimes it's as simple as "our supplier shorted us on bun weight and we caught it." Sometimes it's a portioning drift that crept in. Making those conversations normal takes the fear out of them and makes the team feel like adults who are trusted with real information.

The quiz component matters here too. When we started testing staff on portion sizes, comp policies, and pour standards at ShiftTrained, the questions that generated the most interesting wrong answers were always the ones connected to margin. Not because staff didn't care, but because nobody had ever connected those dots for them before. The quiz revealed the gap. Then we could fill it.

You don't need a software platform to have the margin reality conversation, by the way. You need a whiteboard and fifteen minutes before a Friday shift. Grab your last week's food sales and your food cost, write it up, and walk your team through it. Watch what happens to how they think about the scoop, the pour, the comp.

The operators I've seen hold their food cost through tough supply cycles aren't the ones with the strictest rules. They're the ones whose staff actually understands why the rules exist. That's the whole game.

Have a great day! — Terry Psaltakis
Your AI Restaurant Guy

For more on putting this into practice, see how ShiftTrained approaches cocktail training.