| 摘要 |
The sweet potato vinegar is made from sweet potato peelings. The ingredients include sweet potato peelings, sugar, mother vinegar, yeast and water. It is prepared by boiling the sweet potato peelings in water till cooked, straining the broth to remove the peels, adding sugar to sweet potato broth, boiling for 30 seconds to dissolve the sugar, cooling the broth to lukewarm, adding the yeast, fermenting the broth, adding the mother vinegar and ageing the vinegar to attain the acceptable ph of 3.4, pasteurizing and packing in bottles. |
