Energy, and where to start

The last cost in this course is the one nobody supervises. Energy does not arrive on a pallet, nobody signs for it, and the bill turns up weeks later as a single number with no explanation attached — so it is spent by habit rather than by decision. In this restaurant it runs about $2,000 a month, roughly 4% of sales, hidden inside the "everything else" line of the statement. Ten percent of it is genuinely easy, and ten percent is $2,400 a year.

⚡ What the kitchen burns when nobody is looking

Nearly all of it is switch-on times, doors and maintenance. None of this needs new equipment, and none of it is visible to a customer.

• The gap between switch-on and first order. If the grill and the fryers go on at ten and the first ticket lands at half past twelve, you are paying for two and a half hours of nothing, every day of the year. Stagger the start times by station and write them on the opening checklist.
• The walk-in door. Held open during a delivery, or closing badly because the seal is torn, it costs more than any lightbulb in the building. Seals are cheap and take five minutes; check them by closing the door on a sheet of paper and seeing if it slides out.
• The extraction hood at full speed all day. It is sized for peak service and rarely needs to run there at four in the afternoon. Where the fan has settings, they are worth using.
• Fridges working against the room. A condenser packed with dust, or a unit standing next to the oven, runs constantly and dies early. Cleaning the coils twice a year is the highest-return maintenance in a kitchen.
• Freezers full of ice. Frost is an insulator: a freezer that has not been defrosted works harder to be colder.
• Dishwashers on half loads, and the water heater set higher than the machine needs.
• Lighting and the last person out. LEDs pay for themselves in months, and a closing checklist that ends with a lap of the building is free.

The fryer oil deserves its own line because it is both energy and food. Filtering it daily and keeping the fryer at the right temperature rather than the highest one roughly doubles its life, which is where the eleven centavos on the burger in topic 2 came from. It also makes the food better, which is not always true of the things in this course.

🗓️ The rhythm that keeps it from reverting

Everything here works for about three weeks unless it becomes a schedule. This is the whole course reduced to who does what, when.

Notice that the monthly row is the same meeting the budgeting course already put in the diary. That is deliberate: the variance sheet says food cost ran a point above plan and it was not the volume, and this course is the list of places to look. One meeting, two courses, no extra time.

💰 What all of this adds up to

Put the four levers of this course together for the example restaurant, over a year.

Against a budgeted profit of $46,200, that is about a third of the year — found without one extra customer, one price rise or one smaller plate. And it is worth being honest about one thing while you look at it: the $6,000 the burger produced in topic 2 is not a fifth row. That peso was made of these same four levers applied to one dish, so counting it again would be counting it twice. Do not do that to your own budget.

Which is exactly how this connects back to the previous course. The budgeting course refused to let you write a better food cost percentage into next year's plan without a named cause. Now you have the causes, in a list, with numbers attached — so a budget that moves food cost from 32% to 31% is no longer a wish. It is four decisions and a calendar.

🧭 What you have built

You learned that the leaks you can see are the small ones, and that the invisible ones — a portion, a bin, a fridge door — are where the money actually goes (topic 1). You costed your dishes properly, with weights and with yield, and found a peso on the plate that pays for the most of any single decision in the library (topic 2). You specified what you buy, quoted it three ways, compared it by usable unit and started reading your own invoices (topic 3). You set pars, counted your stock, found out what you really used rather than what you bought, and freed up cash that was asleep in the walk-in (topic 4). You wrote down what gets thrown away for a week and let it diagnose the rest of the operation (topic 5). And you know what the kitchen burns before anybody arrives.

This also closes the finance run. The first course taught you to read the statement your accountant sends. The second went underneath it, to which dishes and hours and channels made the money. The third wrote the year ahead and checked it every month. This one lowers what it all costs, so that the plan and the plate finally point in the same direction. From here the rest of the library is operational rather than financial — the kitchen, the room, the sustainability of what you buy and throw away — and every one of those courses is easier to act on now, because you can put a number on what it would be worth.