What to do if the bottom of the pot is burnt?

The first method is to use cola and flour to clean it!
Cola, as a carbonated beverage, contains acidic components that can effectively soften burnt residue on the bottom of a pot. Meanwhile, flour has absorbent properties, easily removing any burnt residue. Pour cola into the pot, add an appropriate amount of flour and water, mix well, and submerge the black residue on the bottom of the pot.
Boil the water over high heat and wait for a while to allow the acidic components and flour to absorb the grime, softening it. Then pour out the water and wipe the bottom of the pot with a clean cloth to easily remove any remaining grime.