Yeah, sorry but this is survival zombie game, not a cosmo guide to good health - the vitamin/protein idea is over the top for a SUBsystem, and would bloat already bloated crafting, while the list one is just plain too complex and “mathy”, and will raise questions on how it works and where can you find info on hidden values/formulas from all players. The right way to do it IMHO is through the system that is already implemented, as someone already said. There’s plenty of complexity in it already to juggle stuff around. Slapping more and more flags on same items is NOT fixing it.
So we have quite a few properties on food items already - nutrition, enjoyability, quenching, weight, volume, recipe skill requirement, recipe rarity (book/common), spoil time, tool requirements, charges per item, ingredients rarity, and ingredients quantity.
Trick here is to balance it so “cooked meat” item is a low level recipe as it should, but is not overshadowing “sausage” in long term play using above variables.
cooked meat: moderately nutritious, enjoyable, neutral on thirst, light, small, easy to make, common, relatively long-lasting, single use, from common ingredient and no complexity.
sausage: nutritious, very enjoyable, abit quenching, light, small, moderate skill, common, non-spoiling, multiple use, rare ingredients, complex recipe.
It’s easy to see why theres no incentive to make sausage if you break it down like this, and not hard to imagine how to fix it.
It’s so OP atm because most of it’s negative traits are missing - it should be inferior to sausage in every way considering it’s so easy to make and skill/tools/complexity req. for sausage is a lot higher.
I think higher level recipes that are essentially upgrades to their components (cooked meat>sausage, cooked fruit>pie, raw veggie>pickles, grains>breads) should be superior in ALL categories, not just nutrition, morale, spoil time and charges. Volume, weight and component count is where it’s lacking balance.
So IMHO “cooked meat” should be as follows: 20 nutrition, 0 enjoyability, -5 quench, 500g, 2vol, very quick to spoil, single use, multiple meat chunk req, long cook time. This will definitely give incentive to make sausage, while still having it as an entry level into cooking with it’s extremely powerful combination of almost no tools and huge availability. The {hot} and {fresh} would still be available for something that was cooked, and not eaten as a raw ingredient.
TL;DR just balance the current cooking system - its already plenty complex.