More often than not, yellow onions are our go-to variety, kind of like an all-purpose onion.
Yellow onions are usually fist-sized and have a fairly tough outer skin and meaty layers that can be difficult to cut . The only variety of yellow onion that we are most likely to find in the store are Spanish onions. We find this kind of yellow onion to be slightly sweeter and more delicate in flavor.
At least these onions LOOK a lot more distinct than other onions! White onions tend to have a sharper and more pungent flavor than yellow onions, and they also have a thinner, more papery skin. They can be cooked just like yellow onions, but they’re best minced and added to raw salsas and chutneys.
Sweet onions look very similar to your average yellow onion. While they may look similar, they taste entirely different than yellow onions do. They lack the sharp, astringent taste of other onions and really do taste sweet.
Typically, these are what you’ll enjoy thinly sliced on top of sandwiches. They can range in color from white to yellow and often have a flattened or squashed appearance. Sweet onions tend to be more perishable than other varieties and should be stored in the refrigerator, unlike their fellow onions.
Despite the fact that they look so different, red onions are fairly similar to yellow onions in flavor, though their layers are slightly less tender and meaty. They tend to lean more towards the sour-end of the flavor spectrum.