WHAT ARE THEY?
Onions are bulbs, closely related to garlic, leeks, shallots, scallions, and chives. They come in a variety of shapes, colors, and sizes. The most common types, from sweet to sharp, are red, yellow (also known as Spanish), and white.
WHAT TO LOOK FOR
Choose full, heavy onions with tight, flaky skins. Avoid onions with soft spots or spongy skins.
HOW TO STORE
Stored in a cool, dry, and well-ventilated place, onions will keep for a month or so.
Onions are a good source of vitamin C, potassium, folate, and fiber.
TO AVOID TEARS
Chill onions for about 15 minutes, and chop with a very sharp knife.