1. Throw away the rotten longan and wash the good ones with water; boil a large pot of water and when it is hot, put the longan down to scald and soak it for about 2 minutes, then lift it up and drain it.

2, put on the balcony in the sun, you need to turn the longan often; sun to 8 into dry, the skin of the longan will crack, peel the skin and core of the longan; longan meat into the iron plate to continue to dry, sun-dried and sealed in a cool ventilated place to save.