(1) Remove the fine hairs from the yam with fire, wash it with water, peel it with a scraper, and cut it into sections after washing.

(2) Put the yam segments into a steamer, take the steamer, steam the yam in the steamer, take it out and put it into a soup basin, add pure milk, condensed milk and white sugar, stir evenly and let it cool for later use.

(3) Put the cooled yam mud into a paper bag and squeeze the yam mud into a tray for later use.

(4) Put half a bottle of blueberry jam into a bowl, add honey and mineral water, stir and fuse clockwise, put the unstirred blueberry jam on the yam mud, and then pour in the evenly stirred blueberry juice.