|White onions have all-white skin and flesh. White onions are not as pungent as yellow varieties or as sweet as red onions. White onions are an immense alternate if you need an onion flavor but do not want it to be too powerful. White Onions are used in making vegetable mixes, sauces, and soups. It is used in certain succotash dishes as well as certain Indian relishes. White onions have thinner skin and flesh.