diced 2 large Idaho potatoes -- peeled and diced 1/4 teaspoon Pepper Salt to taste SAUTE THE ONION, CELERY and garlic in a bit of the stock until the vegetables become translucent. Add the stock, barley and carrots. Simmer gently, stirring occasionally, about 2 hours. Add the potatoes after the soup has cooked 1 hour. If the soup gets too thick, a dd more stock or water. Taste for seasoning and add salt and pepper as needed.