But beyond that, their flavor is generally sharper and sweeter than yellow onions. While you can use them in cooking, their unique texture and flavor make it possible to also use them raw.
White pearl onions have a sweet, savory, mild flavor with crunchy, crisp, yet juicy flesh. They are a bit less pungent than full-sized onions when used in cooking.
Cipollini onions are pretty sweet, thanks to their high residual sugar content. However, they are not as sweet as shallots. They also have a strong onion taste – something like the taste of shallot.