I chose this method to make 凍蟹. Effect is not bad.
But one point make me quite angry. Today I came to "Welcome" to buy 2 花蟹. A young man give me the 1st one, and then a "C" woman put the 2nd one into the plastic bag quickly and said she chose a good one to me.
Luckly I recheck the crabs, I found the C 女人 gave me a nearly dead crab. I came back to the seafood counter and change another one. I told them if the crabs not good, I will come back again.