I hadn't thought about sulfites in spices, I like the dried onion powder because I think real onions bother me. I got this idea, actually from Jan, because she suggested that if milk (regular cow stuff)bothered me, why not try the superheated stuff they sell in a box (Parmalat is one name) It works great, of course I only have about 12 oz twice a week (rotation diet). Same with corn. Real corn- no no! Corn chips, yes. (In moderation! not the whole bag!