How to make Kumquat Marmalade. In this episode, a classic Kumquat Marmalade is revived with beautiful Taiwanese Oolong Tea. Infusing tea in food creates another dimension to the flavours. The highly oxidized JinXuan Oolong creates a bright fruity sweetness with sour/sweet mix of Kumquats. A brilliant balance that can be used for further pairing with cheeses or adding to pork stews.