2. Put the wok on medium fire, stir-fry the wok, add vegetable oil to heat it, add butter to boil, add ginger, garlic cloves and scallion to saute until fragrant, then add Pixian watercress and Zanba pepper, and stir-fry it slowly for about 1 ~ 1.5 hours until the watercress is dry and fragrant.
3. Immediately add star anise, kaempferia kaempferia, cinnamon, fennel, Amomum tsaoko, Lithospermum, cinnamon, vanilla, clove, etc. Continue to stir fry on low heat for about 15 ~ 20 minutes. When the color of spices in the pot becomes darker, add rock sugar and mash juice, and simmer until the water in mash juice completely evaporates. At this time, take the pot away from the fire, and.