The reason why Galanz baked sweet potatoes with high fire stall is because high fire stall has strong firepower and can bake sweet potatoes quickly. This baking method can reduce baking time, thus reducing the loss of nutrients. In addition, the high fire stall can better lock the moisture of sweet potatoes and make the baked sweet potatoes softer and more delicious. Generally speaking, roasting sweet potatoes with big fire can better preserve the nutrition and taste of sweet potatoes.