Thanks, Till. That's basically what I'm doing. No overhead costs are being calculated yet. Although, I can do that all the way down to how many KWH of electricity I use to run the oven to make the cake.
I am a control freak about the quality of my ingredients. I have been known to make a loaf of home-made wheat bread just to use for fresh bread crumbs. It really does make a difference.
The hard part for me is actually sticking to measurements. I tend to cook by feel and taste. Measuring quantities is something that I am disiplining myself to.
/john
I would measure until I had the cost of each and every item cooked. I taught our boys to cook. I used the hand method of cooking too, until they made me realize....they were just learning, so I would put it in my hand, then in the measuring cup or spoon. I'm back to hand, and pour again. You sound more finicky about your recipes than I and around here I'm known as a nit-picker.