Take a close look, the hand does not peel, indicating that the concentration of lye is not very high.
His chemistry was very poor, and now he regrets it very much.
Then he used a bowl to heat the solid pork fat, waited for them to completely melt, then poured in the lye, and stirred.
Clearly, turbidity was produced, and he continued to stir. He saw more turbidity forming, and the bowl became very viscous.
This sticky, smelly thing had some dirty stuff on it, and he used a brush to dab it out and put it in another bowl to clean.
Turn the fire down a bit and continue stirring.
The amount of lye might be insufficient, so he added more.
He kept stirring. He felt he had been stirring for about two hours, and all the lard was gone.
He thought for a while, poured in some spring water, and continued to heat and stir.
Some dirty impurities floated to the top. He used a brush to dab them out again.
He kept heating until all the water evaporated.
