| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sweet potato baked in pebbles and having improved effect of a health food. <P>SOLUTION: Baked sweet potato is prepared by using tourmaline as a substitute for river stones (pea gravel). The action of tourmaline is exerted on the potato to change the baked sweet potato to a health food. <P>COPYRIGHT: (C)2004,JPO |
