For the Chowder:

• 2 tablespoons butter
• 1 tablespoon olive oil
• 1 small onion, finely chopped
• 1 celery stalk, diced
• 1 small carrot, diced
• 2 cloves garlic, minced
• 3 tablespoons all-purpose flour
• 4 cups seafood or fish stock
• 1 cup heavy cream
• 1 cup whole milk
• 2 medium Yukon gold potatoes, peeled and diced
• 1 bay leaf
• 1/2 teaspoon dried thyme
• Salt and pepper to taste
• 1/2 lb haddock or white fish, cut into chunks
• 1/2 lb salmon, cut into chunks
• 1/2 lb scallops
• 1/2 lb shrimp, peeled and deveined
• 1/2 cup cooked lobster meat (optional)
• 2 tablespoons chopped fresh parsley
• Lemon wedges for serving (optional)