Easy and Comforting Cozy Fish Soup with Cod and Potatoes

Name: Easy and Comforting Cozy Fish Soup with Cod and Potatoes
Ingredients: 2 tbsp unsalted butter; 1 large leek, white and light green parts only, sliced into half-moons; 2 cloves garlic, minced; 1 rib celery, finely diced; 1.5 lbs Yukon Gold potatoes, peeled and cut into 1/2-inch cubes; 4 cups fish stock; 1 cup dry white wine; 1 bay leaf; 1 tsp dried thyme; 1.5 lbs fresh cod fillets, cut into 1.5-inch chunks; 1 tbsp fresh lemon juice; 1/4 cup fresh parsley, chopped; Fine sea salt and freshly cracked black pepper to taste