Also high-sugar varieties like Vidalia and Candy onions. Don’t knock us for our onions - at least our onion farmers aren’t dropping bombs on brown people.
The larger the onion, the more water is in it and the less it tastes, from my experience.
I never realized Americans had particularly big onions, but a lot of them are bigger than my fist and definitely full of flavor. Now something like a shallot is small and delicious but it’s a different flavor.
Maybe: it does seem like the larger onions tend to be the sweeter varieties. That’s great though, when one slice covers your entire burger, and you get the satisfying crunch of a nice thick slice of onion without all the bitterness.
That being said, Ive tried caramelizing red onions instead off the more standard yellow, and I’m not sure the final result is any different