In a large Dutch oven, heat 2 tablespoons butter and 2 tablespoons oil over Med-High heat. Add the carrots and celery, sauté 5 minutes; stir occasionally. Add the diced onions and cook 3 additional minutes or until the onions are translucent. Add the minced garlic and cook 30 seconds – just long enough for the garlic to bloom.
2 tablespoons unsalted butter, 2 tablespoons oil, 6 carrots, 2 celery stalks, 1 medium yellow onion, 1 garlic clove
Slowly add 1 cup of broth while scraping the bottom of the pot to deglaze the pan. Add the rest of the broth and the wine, the roux and stir well. Bring the mixture to a boil and stir often..
3 cups reduced-salt chicken broth, ¼ cup dry or semi-dry white wine
Reduce the heat to low and add all other ingredients except the garnishes.
3½ cups half and half, 2 tablespoons chicken base granules, ½ teaspoon black pepper, 2 tablespoons fresh parsley, 3 dried bay leaves, 1½ teaspoon Herbs de Provence, 5 cups cooked chicken
Simmer 15 minutes then taste and adjust seasonings, if necessary. This is the time to add salt or pepper, if desired. Continue to simmer the soup until it thickens, about 30-45 minutes more, or to the desired consistency.
Discard the bay leaves.
Garnish with sprinklings of shredded Gruyere and fresh parsley.
Shredded Gruyere cheese and chopped parsley
Serve with crusty bread.