Zhou Lan cooled the steamed sweet potatoes with cold water before adding them to the fluff-like dough, continuing to explain, "The sweet potatoes are now very glutinous and crumble at the touch of a hand. The moisture and starch in the sweet potatoes will also help the dough set better. What we need to do at this point is to ensure that the sweet potatoes and flour are fully integrated. It's difficult to achieve this with chopsticks, so we need to wash our hands and knead the dough with our hands."
Jiang Xia obediently followed the instructions and carefully kneaded the sweet potatoes into the dough under Zhou Lan's direction, gradually forming a smooth, pale yellow dough.
Zhou Lan nodded in satisfaction. Her daughter was indeed smart and caught on quickly when it came to cooking.