TheFuzzy wrote:
Another taming tip:  toss the red onions with a little wine vinegar (like 1-2tsp) and leave them to sit in the fridge for at least an hour or better overnight.  This will sweeten them considerably.
I got this tip from some Mexican recipes years ago, and it works great.  I use it when I can tell the onions are just too harsh.
Years ago, when I started cooking, purple onions always seemed like the mildest on the market, and whites the sharpest.  If you wanted a raw onion on a salad, purple was the way to go - I never had any purples that would make me cry.  Now, they are often the harshest ones around - you never know until you slice into a batch.  Anyone else notice this trend?