Onions are members of the Allium family, and fall into two main categories-green onions and dry onions (mature onions covered with dry, papery skin).
Onions are a rich source of phytonutrients including allyl sulfides and quercetin.
Antioxidant Score (ORAC)=1034*, 1521**, 1220***
*Onions,raw, **Onions, red, raw, ***Onions yellow, sauteed
Selecting and Storing Onions
Choose onions that are heavy for their size with dry, papery skins. Store in a cool, dry place with good air circulation for up to 2 months. Cut onions should be tightly wrapped, refrigerated and used within 4 days.