It's simply Clay. And it determines how nimble and able to react you will be.
Lets say I run tight margins and need to re-cost monthly.
I can take the number from that month spend on food. But what If i used food that came in the previous month, or the month before? Hmm?
Is that free food? No, it's not. It cost something, but for the sake of accuracy, it should not be part of food cost until it's used.
Those lamb racks you bought at the end of last month but sold none of? Should that be a component of that months food cost? Not in my book. It hasn't even been offered for sale. It's in food purgatory.
Sure, you can use a rolling average, but that wont tell you much about what you might be doing wrong. At best it's only useful for observing trends.
Spoilage? Misfires? Poor trim? Bad yields? Mistakes? Comped meals?
All this stuff should be tracked and logged. As should "shrinkage" aka theft.
If I have costed every dinner plate out, and I KNOW for a FACT that my per plate costs are under 30%, then, the problem is somewhere else.Who knows where. If I have no real control over any service but dinner, my concience is clean, I KNOW what my plates cost. If the boss's P+L looks bad, well, I did my part. If they want it fixed, I need the cooperation, rescources, and authority to do it. I have none of that. I could have the system set up and running in a couple of weeks, and would probably spend two or three hours a month on it.
For accuracy, inventory is pretty important.
Knowing your inventory makes ordering easier.
Knowing your inventory means being up to date on prices, and being able to adjust menu prices quickly.
Your 26% is your particular standard. I shoot for 30%, and I do it on the food over which I have control. Many run higher. Some lower, though you are probably not talking much better than institutional food when you get close to 20%. How much the market will bear is always a guessing game. Busy location, busy restaurant, competition etc all play a role, so you 26% is not one size fits all.
I already have the problem of being the most ezxpensive place among the competition, so i take a hit trying to keep the food quality up and prices down.
And ultimately, that is the owners call. I would like to provde the level of cuisine I think my owner wants, but it's not possible at 25% in my opinion, not at our current price structure. Sure i can raise prices, but we did that last year, and the result were a lot of lost revenue.
But, If I'm told to raise em' up they go, because I'm not arrogant enough to argue with the guy that pays the bills.
A profit and loss statement is fine for normal business purposes. For the purposes of running a kitchen, it's not a very useful set of numbers.
No, inventory is not fun. Not for most anyway. It's a drag. If my boss doesn't want to do it, fine. Less work for me. But he doesn't know what my food cost is. So I'll just keep pricing up until I hit his number derived his way, adjust the level of the cuisine doen to match the numbers. It's all I can do.