How do I know if a black banana is too old to be eaten?

Question

From time to buy, I buy too many bananas. For the future, I am considering refrigerating them instead of eating them, but they turn black.

How can I know whether a black banana is still edible?

Answer

Open it up. If it's soft and pale brown or darker inside too, it's overripe and no longer good for eating straight; however, it can be used in baking, banana bread, or smoothies. Once it's black, the banana is garbage.

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