Coq au Vin (French Chicken Stew)

Name: Coq au Vin (French Chicken Stew)
Cook time: 1 h 30 min
Total time: 1 h 30 min
Cuisine: French
Ingredients: 4 ounces pork belly, diced; 4 ounces peeled pearl onions; 8 ounces mushrooms, quartered; 2 TBSP olive oil; 3 pounds bone-in skin-on chicken pieces; salt & pepper; 1 medium carrot, chopped; 2 leeks, thin slice (white and pale green parts); 2 garlic cloves, chopped; 3/4 cup red wine (merlot or burgundy); 1 TBSP unsalted butter; 1/4 cup all-purpose flour; 1/4 tsp dried thyme; 2 bay leaves; 2 cups water