You will need to begin this recipe a day ahead.
Note Gai lan flowers are available from Darling Mills Farm. Umeboshi and raw soy sauce (Nama Shoyu) are available from Japanese food stores. Sémillion verjuice is available from selected delicatessens and wineries. Korean fermented plum extract (maesil), virgin black sesame oil and forbidden rice are available from Korean grocers and online from Melbourne-based Korean food specialist Table181. There is no substitute for maesil. If black sesame oil is unavailable, use regular sesame oil. Order baby amaranth leaves from select greengrocers.