Heat the oil in a large, deep pot. Cook the onion and garlic gently until it is golden & soft. Partially mash the cooked peas with a fork & then add to the cooking onion. Add the tomatoes & mix well. Put in the turmeric, red pepper & chili powder, seasoning & half the cilantro. After that, pour in the coconut milk, stirring to blend all the ingredients. Cover the pot & leave to simmer for 10 minutes before garnishing with the remaining cilantro. Serve over rice or stir in the rice.