To make this soup you will need shellfish, broth and vegetables - potatoes, onions and carrots. In the US, the most common are two species of chowder with shellfish - a chowder from New England and a traditional Manhattan chowder. In the first case, the basis of soup is cream or milk, and in the second - tomato paste or tomatoes. Chowder from shellfish can be cooked on a creamy or watery basis.