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Onions and potatoes should be stored separately because onions release ethylene gas and moisture that significantly accelerate the spoilage of potatoes. The gas causes potatoes to sprout and turn green, while the moisture causes onions to turn mushy and rot, leading to a much shorter combined shelf life.
Reasons to Keep Them Separate:
- Ethylene Gas Emission: Onions release high levels of ethylene gas, a plant hormone that causes nearby produce, such as potatoes, to ripen and sprout prematurely.
- Moisture Exchange: Potatoes have high moisture content, which can cause onions to turn brown, moldy, and turn into a soft, rotten mess.
- Spoilage and Odor:The gases and odors from onions can affect the taste of the potatoes, and the combination accelerates the rotting process.
Proper Storage Tips:
- Potatoes: Store in a cool, dark, and dry place with good ventilation (e.g., in a paper bag or mesh basket) to avoid sprouting.
- Onions: Store in a cool, dark, well-ventilated area, preferably in a mesh bag.
- Avoid: Do not store them together in the same basket or confined, dark space.
