General Mills and Campbell Soup Co. are in a war of soup advertisements. After Campbell recently ran an ad in the New York Times claiming that General Mills’ Progresso brand soups contain monosodium glutamate (MSG), General Mills responded by placing its own full-page Times ad that read, “Campbell’s has 95 soups made with MSG.” This ad followed Progresso’s announcement that it removed MSG from 26 of its soups. Lynn Dornblaser, new products expert at the Mintel consulting firm in Chicago, said it’s highly likely that Campbell will strike back.