Take a sweet potato5 that has some dark eyes on it.Use toothpicks to hang it over a jar of water, just like the avocado.

• 也可以找一个长着深色芽眼的红薯，插几根牙签，和刚才处理鳄梨核的办法一样，也使其悬挂在盛有水的广口瓶里（如图3）。