The two methods have the same effect. Yam has a sweet sense of life, eat a bowl of spleen and stomach every day. There is always yam powder at home. If you wash a bowl of yam paste at the beginning of a cold and drink it while it is hot, you can basically eliminate the cold after sleeping.
Steamed yam has the effects of invigorating spleen and stomach, nourishing kidney and producing sperm, benefiting lung and relieving cough.