1, white vinegar soaking method: This method is only applicable to casserole or stainless steel pot. The method is simple. Prepare a pot of clear water, then add a proper amount of white vinegar, soak the bottom of the pot in water for more than half an hour, and then wipe it with steel balls or cleaning cloth for several times. Soon the bottom of the pot will be clean!

2. Detergent+tomato sauce: Mix detergent+tomato sauce+water according to the ratio of 1: 2: 3, then wipe it on the bottom of the pot and spread a layer of paper towels. After waiting for 5 minutes, tear off the paper towel. Paper towels will absorb oil stains and black stains on the bottom of the pot, because tomato sauce is an acidic substance, which can react with black carbide and clean the bottom of the pot well.

3, baking soda+white vinegar: baking soda is really an artifact in life, and cleaning the bottom of the pot is essential. Sprinkle white vinegar on the black scale at the bottom of the pot to soften the black scale, let it stand for more than ten minutes and then apply baking soda, so that the black scale will become softer, and it is easy to wipe off the stain at the bottom of the pot with a cleaning cloth.