Can Can Potato Corn Chowder

Ingredients

• 1 potato, chopped (may use canned)
• 2 carrots, chopped
• 1 onion, chopped
• 1 stalk celery, chopped
• 1 tablespoon butter or 1 tablespoon margarine
• 1 tablespoon olive oil
• 1 (14 ounce) can chicken broth or (14 ounce) can vegetable broth
• 1 (14 3/4 ounce) can cream-style corn
• 1 (12 ounce) can evaporated milk (can also use half & half)
• 1 teaspoon salt
• 1/4 teaspoon cayenne pepper
• 1 tablespoon dried parsley flakes
• diced cooked chicken or ham (optional)