1, hairy potatoes have the effect of tonifying the lungs and kidneys and strengthening the spleen, while yam is more powerful in digestion, nourishing the body, and astringing weak sweat. Yam is considered a health care ingredient, better in medicine, has a therapeutic effect on the digestive system and kidney deficiency and other diseases, can restore the damaged gastric mucosa, the role of yam is greater than hairy potatoes.

2, hairy potatoes have a softer and more glutinous texture after steaming, while yam has a crisper texture after steaming, and yam tastes better than hairy potatoes.