| 摘要 |
<p>PURPOSE:Yams are grated, mixed with a preservative and subjected to vacuum packaging to enable the yams to be storable without discoloration for a long period of time. CONSTITUTION:Yams are grated with a machine and mixed with a preservative. Then, a certain amount of grated yam is put in a pouch such as a vinyl bag or a can and tightly sealed. Thus, housewives do not need to touch the yams, thus they are protected from rashes.</p> |
