Step 2: Boil the oil in the pot. We need to stir-fry the spices, then add the bean paste to stir-fry the red oil, and then put the ginger slices and onion segments into the pot. Finally, we add some water and salt, light soy sauce and oyster sauce to boil. It will take about 25 minutes for us to turn it to low heat. The bottom material of spicy hot pot is made like this. The third step is to use bone soup if you like to eat clear soup at the bottom of the pot. We just need to add ginger slices, mushrooms, medlar and edible salt to it and boil it! As long as you learn to make your own chafing dish, you don't have to go out and buy it. You can make hot pot bottom material in three simple steps, with zero addition!