When (inevitably) poaching, your meat gets marked as stolen, but cooking it removes the “stolen” mark and most of the time increases the value of the produce too. By a little margin.
This wouldn’t be as bad, since its like 0.5 groschen increase on hare and such. BUT I believe Deer meat has an unintended bug where cooking DEER MEAT you get COOKED DEER LIVERS (or some other intestine, do not remember now) which is about 40 groschen value, which just breaks the economy.
Doesn’t happen
Hope you look into it, as it will help balancing the economy and mitigate the exploit usage.