Creamy Clam Chowder in 30 Minutes

You can adjust the thickness of the chowder by changing the flour amount. From as little as 1 Tablespoon for a thin, almost broth-like chowder, to 1/4 cup or slightly more for a thick chowder. We prefer to use whole clams that we find in our market in the 10 oz cans. But most markets carry the 6.5...