Luo Huiniang didn't understand, but she didn't ask further; she just kept tending the fire and watched the iron pot.
Gu Jinli took two tablespoons of vinegar, placed them in a bowl, added an appropriate amount of water, and mixed them well for later use.
After 30 minutes, the soy milk in the pot began to boil, bubbling up profusely. Gu Jinli stirred the soy milk with a wooden spoon to prevent it from sticking to the pot while she skimmed off the foam little by little. Once the foam was removed, she said to Luo Huiniang, "Hui Niang, pull out the fire."
Luo Huiniang had been waiting for this, and upon hearing it, she quickly removed the burning wood from the stove and buried it under the ash in the lower part of the clay stove.
As she looked at the soy milk in the iron pot, Luo Huiniang asked Gu Jinli, "Xiao Yu, is this tofu? Why does it still look like milk?"
