Question: do u keep onions in the fridge?
Answer: That's why onions are best stored in a cool but dry, dark and well-ventilated place. ... Peeled onions can be stored in the fridge for up to two weeks, while diced or sliced onions will only last for 7–10 days (4). Summary Avoid storing whole, unpeeled onions in the fridge, as they easily absorb moisture.