vegetables
Onion
The cool-dark-ventilated rule — and the reason onions and potatoes are enemies.
Core Biological & Field Specifications
Counter or fridge
Counter — cool, dark, dry, ventilated (NOT near potatoes)
Ripe test
Firm, dry papery skin, no sprouts or soft spots
Shelf life
Whole: 2–3 months; cut: 1 week fridge, wrapped
Ethylene
Minimal — but store away from potatoes (each spoils the other)