Crab gravy using coconut milk recipe

Name: Crab gravy using coconut milk recipe
Ingredients: Crabs - 2; Chili powder - 1/2 a teaspoon; coriander powder - 1/2 teaspoon; salt - 1/2 teaspoon; turmeric - 1/2 a teaspoon; Onion - 2; tomato - 2; green chili - 1 or 2; Black pepper - 1/4 tsp (optional ( here I didn't add)); Oil 5 to 6 tbsp; Chili powder (coriander powder, salt - 1/2 tsp or as needed); Salt- as per taste; Curry leaves - little; coriander leaves - little; water - 1/2 cup to 3/4 cup (or as needed to cook the crab); Coconut milk - 3/4 to 1 Cup; Cumin seeds - 1/2 tsp; Fennel seeds - 1/2 tsp; Cloves - 5 or 6; cardamom - 2; cinnamon stick stick - 2 inch crushed; bay leaves - 2 or 3; star anise - 1 Or 2 (I didn't add, as I didn't have at the time of cooking)