About 13 to 15 minutes can be, mainly because the steamer its thermal conductivity and water locking are particularly good, so used to steam crabs can be said to be very efficient.

1: Preparation of ingredients: 4 crabs, ginger moderate Seasoning: 3 tablespoons of vinegar 2: rounded is the female crab. 3: the belly is triangular is male crab. 4: soak the crab in water for 4 hours, let it spit out the dirt, and then use a brush to scrub clean. 5: Arrange the crabs in a steamer tray with their bellies facing upwards. 6: Place in steamer. 7: Mince ginger and place in a small bowl. 8: Pour in the vinegar and mix with the ginger minced, and make a ginger vinegar sauce.