Vidalia-onion lovers traditionally buy early in the season and store them for use later on. But the most practical way for those of us who don't happen to have an extra refrigerator just for onions is to simply wrap the onions in foil and keep them from touching. Moisture and pressure cause the delicate onions to rot. Wrapped and kept separate, Vidalia onions can be successfully kept for six months. I once unwrapped a year-old onion and it was perfect.
Onions contain quercetin, an antioxidant scientists believe destroys free radicals.
Free radicals are associated with premature aging, as well as many other disorders, ranging from Parkinson's Disease and cancers to cataracts. Onions contain more quercetin than any other fruit or vegetable and the benefits from onions seem to be the same whether the onions are cooked or raw. Studies also show that eating raw onions can reduce cholesterol levels and lower blood pressure. Talk to any gourmand who appreciates Vidalia onions and you'll get a different recipe for how they're best served. Slice paper thin and serve on party bread slathered with mayonnaise.