Hearty Vegetarian Corn Chowder

Name: Hearty Vegetarian Corn Chowder
Ingredients: 1 tablespoon butter (I used low fat margarine which is half the calories); 1 onion, finely chopped; 1 stick celery, finely diced; 1 medium carrot, cut lenghtways, finely sliced in half moon; 1 small sweet potato, cut into 1/2 inch dice; 3 corn cobs, kernels removed; 1 cup green peas; 1 tablespoon flour; 2 cups low-fat milk; fresh ground black pepper; 2 teaspoons vegeatable instant bouillon granules (or to taste); Tabasco sauce; 1 teaspoon mixed Italian herbs