Ingredients

• For marinade:
• 2 tablespoons plain non-fat yogurt
• 1 teaspoon ginger-garlic paste
• 2 tablespoons tandoori masala paste
• 2 teaspoons canned pureed tomatoes
• 1 teaspoon soy sauce
• 1 teaspoon white vinegar
• 5 tablespoons lemon juice
• 1 egg, beaten
• 2 1/2 tablespoons cayenne pepper, or amount to taste
• 2 tablespoons ground coriander
• 2 tablespoons ground cumin
• 1 teaspoon ground turmeric
• 1/2 teaspoon salt, or to taste
• 1/2 teaspoon fresh-ground black pepper
•  
• 5 (6 ounce) cod fillets, rinsed and dried with paper towels
• 2 teaspoons butter
• 2 tablespoons olive oil
• 2 teaspoons chopped fresh cilantro, for garnish
• 1 lemon, cut into wedges
• 1/2 red onion, thinly sliced