Melt butter in large saucepan and saute onions for 5 minutes. Whisk in flour until smooth.
3 Tablespoon butter, 3 Tablespoon flour
Drain juice from clams. Add cream, milk and clam juice to pan and stir until thick and smooth. Add all the rest of the ingredients except clams and corn. Cook 20 minutes until potatoes are tender.
1 cup onion, 2 cups potatoes, 1 cup carrots, 1 cup half-and-half cream, 1 cup milk, 1 1/2 teaspoons salt, bay leaf, ground black pepper to taste