Serves 3-4
Sauce:
Put the tomato paste, salt, sugar, spices, and lemon juice in a large bowl with 1 tbsp. water. Mix well. Slowly add the coconut milk, mixing as you pour. Set aside.
To stir-fry the shrimp:
Put the oil in a pan over medium heat. When oil is hot, put in the mustard seeds. When the seeds begin to pop, add the garlic. Stir until the garlic slightly browns and put in the shrimp. Stir until the shrimp turn opaque most of the way through. Add the sauce and heat through. Serve with Basmati-style rice.