The Onion Itself

The basic white and yellow storage onion is your workhorse onion, the onion you should always have on hand. When you shop, you should look at the quality of the onion rather than seek out a specific type. Spanish onions, yellow onions, white onions, and even red onions all work the same. Look for firm bulbs with a tight dry skin. I prefer them big, so I usually choose Spanish. Big onions are more efficient—I spend less time peeling. If I need half an onion, the other half can be wrapped and stored in the refrigerator.