Steps
1)  Cut a cover on orange at approx. 1/5 at the top
2)  Excavate and empty the orange content, cut the orange content into dices
3)  Boil the ginkgoes for 10 minutes, remove shells and membranes
4)  Cut each ginkgoes into 2 pieces, remove central stalks
5)  Add gingkoes, orange dices and sugar into the orange case
6)  Add boiled water in, seal the cover by bamboo teeth picker
7)  Put the whole orange case into a fitted bowl, stew 20 minutes by low heat
8)  Serve in hot            
　

Remark