The top of the ladder is not producing it, and most of that work is already written down somewhere else. This topic spends one paragraph acknowledging that, and then does the two things that are genuinely this course's own: designing a menu where one dish's trim is another dish's ingredient, and getting food out of the door before it dies rather than after.
✅ What you already know, in one paragraph
Prevention lives in three courses you have read. The cost control course built the production sheet, the par levels and the portion tools, and its waste log is where your own five causes came from. The sales analytics course built the forecast, which is what stops a Tuesday being prepped like a Friday. And the kitchen course moved work out of the peak and gave everything a scale and a scoop. If those three are running, most of what a small restaurant can prevent is already prevented, and the remaining 125 kilos is the honest residue.
So this course does not rebuild them. It picks up the two prevention levers that only exist once you are thinking about waste as material rather than as money — and both of them, usefully, also make the food better.
🔁 Design the menu so trim is an ingredient
Thirty-three kilos a month of this restaurant's waste is prep and trim: stalks, tops, trimmings, bones, the outer leaves, the ends of things. Most of it is perfectly good food that happens not to be the part the recipe asked for — and the only reason it goes in a bin is that nothing on the menu wants it.
The fix is a menu decision rather than a kitchen habit, which is why it belongs here: build dishes that use the by-products of the dishes you already sell. The classics exist because they work, and every one of them is somebody's trim.
- Bones and shells become stock, which the sourcing course already called the cheapest quality upgrade in a kitchen, and which removes a purchased item from your list.
- Trimmings become the braise, the ragù, the croquette, the soup of the day — the moving part of the menu the sourcing course created for the season is exactly where these live.
- Stalks and tops become the pesto, the slaw, the pickle, the garnish. Broccoli stalks and carrot tops are food; they are simply less famous than the florets.
- Bread becomes the crouton, the crumb, the pudding, which is the oldest example in the trade.
- Fruit that is turning becomes the syrup, the sorbet, the cocktail, which is the bar's version of the same idea.
Two rules keep this from becoming a chore. The by-product dish has to be good enough to sell on its own merits — a dish that exists only to use something up tastes like it, and the sales analytics course will show it sitting at the bottom of the mix. And it has to be small enough not to jam the pass, which is the kitchen course's bottleneck question applied to a well-meaning idea.
This is also where cross-utilisation earns its keep: an ingredient that appears in three dishes gets used up, while an ingredient that appears in one gets thrown away when that dish does not sell. Every time you add a dish, the cheapest version is the one built mostly from things you already buy.
⏳ Sell it before it dies
The second lever is timing. Twenty-six kilos a month spoils, and almost none of it spoils suddenly — it becomes food that must be used today, then food that must be used now, then rubbish, and the only thing that changes is whether anybody noticed in time.
What noticing looks like in practice is a short list, written at the start of service, of what has to move today. The kitchen course's production sheet already has a place for it; this is just insisting that the line exists and gets read. Then there are four honest outlets, in order of preference.
🚪 The four outlets, in order
Sell it. The special, the plate of the day, a suggestion the floor actually makes. The room and reservations courses both showed that a named recommendation from a server outsells a printed sign, and this is the same mechanism doing a different job.
Discount it, deliberately. A late-service offer, a smaller portion at a lower price, or one of the surplus-food platforms if they operate near you — which behave exactly like the delivery platforms in the first course of this library, commission and all, and deserve the same arithmetic before you sign up.
Feed the team. The staff meal is a legitimate destination and it is worth planning rather than improvising, because the cost control course counts it as a cost and the food safety course still governs it.
Then donate it, which is the next topic and is what the remaining still-edible food is for.
What is not on that list is holding it one more day and hoping. That decision is not a saving; it is the food safety course's problem, and it is the one place in this course where the environmental answer and the safe answer can diverge. When they do, safety wins, every time, without a discussion.