Chingri Malai Curry from How to Cook Indian by Sanjeev Kapoor

Ingredients

• 1 tablespoon cumin paste (see Note)
• 5 or 6 green chiles, stemmed and slit
• 1 teaspoon garam masala (spice mix)
• 1 cup (200 ml) coconut milk
• 2 tablespoons fresh ginger paste
• ½ teaspoon red chile powder
• 1 teaspoon cumin seeds
• 1 teaspoon mustard seeds
• ¼ cup (50 ml) filtered mustard oil (see Note)
• 1 teaspoon sugar
• 1 teaspoon table salt
• 15 medium shrimp
• 1 teaspoon ground turmeric