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What is the difference between the clam chowders - Manhattan, New England, and Rhode Island?
Manhattan clam chowder includes clams, tomatoes, other vegetables, and seasonings. New England clam chowder is made with clams, onions, salt pork, potatoes, and milk or cream. Rhode Island clam chowder is the same as New England, but it is made specifically with Rhode Island quahogs. However, Fannie Farmer's recipe for Rhode Island chowder also included tomatoes! (Farmer, Fannie Merritt, The Boston Cooking-School Cook Book, Boston: Little, Brown, 1918)