Ingredient:

• 2 teaspoons oil, divided
• 1 teaspoon cumin seeds
• 1 teaspoon coriander seeds
• 5 small fresh red chile peppers
• 2 medium onion, chopped
• 8 cloves garlic, minced
• 2 medium tomatoes, chopped
• 1 tablespoon tamarind paste
• 1 pinch ground turmeric
• 1 tablespoon water, or more as needed
• ½ teaspoon mustard seed
• salt to taste
• 6 curry leaves