If from the point of view of porridge fresh yam will be better, because it contains liquid, porridge to noodle taste is very good, it is best to use the Chinese yam, is the kind of long and thin, more coarse yam is generally more brittle, not as good as fine

If it is a powdered rinse, dry is better, porridge is naturally fresh, yam lungs, spleen and kidneys are supplemented by the nature of the medicinal properties of all kinds of people to take, but to be The first thing you need to do is to take a long time to get a good result, and it's a good thing to replenish the spleen and the kidneys

.