Package facts
Save price, quantity, unit, and update time for every ingredient purchase.
Feature
A useful cost is reproducible: another person can see where it came from and what will change it.
Save price, quantity, unit, and update time for every ingredient purchase.
Mass stays mass, volume stays volume, and density is required before crossing between them.
Ingredients, labor, packaging, overhead, yield, margin, and markup remain separate instead of becoming one opaque number.