Crab in shell with cherry tomatos

Crab 1, clean, separate limbs, take the inner body out. Just steam cook and keep it aside.
Shallots a handful,  garlic 2 cloves, ginger 1 inch, all sliced thinly.
Coriander powder 2tsp., turmeric powder 1/4 tsp., black pepper powder 1/2 tsp., salt to taste, coconut oil 1 tbsp., cherry tomatoes as you like.
Heat coconut oil, sauté the shallots, garlic and ginger along with salt to taste. When sautéed and aroma spreads add the condiments and spice, stir for 30 seconds, add the crab pieces, combined with the gravy, if need add a little boiling water to get the gravy spread thoroughly. When fully cooked add the tomatoes, allow to heat it in simmer flame and it is done. Transfer the contents in a serving tray with the balance gravy in the shell. Serve with bun or roti.