Sticky corn residue can be bought in the northeast market. You can ask the grain seller that the sticky corn residue you bought will be pale and white.

Second step

Soak the corn residue one day in advance, and change the water appropriately in the middle.

Third step

Put the soaked corn residue into the pot, add water, the depth of the water is more than 1 times to 1.5 times of the corn residue, bring to a boil, simmer for a while, turn off the fire, stew for a while until it stops boiling, then turn off the fire, boil until it boils, and then turn off the fire for a while. Repeat this for 3 or 4 times, and it will be cooked (this is my mother-in-law's cooking method of fire-fighting porridge, which is actually too troublesome)