I wasn't allowed in the kitchen until last year, and my command of French is middling at best, but a lifetime of thrift shopping and being clumsy turned me into a stain removal expert the likes of Heloise. All you need are a few natural ingredients you probably have on hand. Pretreat stains as directed above, then wash with savon de Marseille and cold water- olive oil-based soap is magic on delicate fabrics and greasy stains. Remember, use vinegar and baking soda one at a time, not in…