Brush the crab with a toothbrush, open the crab cover to remove sandbags and crab hearts, cut off crab gills, crab mouths and other small water, rinse and cut into pieces.

Wet the cut of crab with starch and fry it in oil pan.

After the crab is fried, start the pot again and saute ginger and onion with a little oil.

After the ginger and onion are sauteed, stir-fry the crab pieces slightly and add boiling water to cook.

When the crab is cooked, add salt and steamed fish sauce to taste.

Finally, add water and starch to collect juice, and you can take it out of the pot and put it on the plate.