If you live in the SF bay area, Good Eggs sells several types of uncured bacon. The one from Sonoma County Meat seems the least processed, having only salt and

If you live in the SF bay area, Good Eggs sells several types of uncured bacon. The one from Sonoma County Meat seems the least processed, having only salt and spices added. None of them are cheap though, around $14-16 / lb, far more than what I'd pay at Safeway for the carcinogenic bacon.