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no, we are not, you wash your onions, don't you? It's same

Washing on top is fine, but I don't see the need and you also have to check the quality of the water supplied by your city because otherwise it could contaminate the onion, all products that are not whole means that they are not whole or that a piece is missing and if a piece is missing, a piece of some agent or substance that could be used by your body will also be missing.