How to Make My Grandmother's Quick Seafood Soup

Ingredients

• 2 tablespoons olive oil
• 1 small onion, diced
• 2 cloves garlic, minced
• 1 medium carrot, diced
• 1 medium celery stalk, diced
• 4 cups seafood stock or fish broth
• 1 can (14 oz) diced tomatoes with juices
• 1 teaspoon dried thyme
• Salt and pepper to taste
• 8 oz shrimp, peeled and deveined
• 8 oz white fish fillets, cut into bite-sized pieces
• 4 oz mussels or clams, scrubbed (optional)
• ¼ cup fresh parsley, chopped
• 1 lemon, cut into wedges