Method for make ancient gypsum

Step 1: Stir-fry Huang Dan, also known as Guangdan (generally available in larger Chinese medicine shops, the main ingredient of black plaster). Put Huang Dan in a clean iron pan and stir-fry with slow fire until the water in the Dan is exhausted and loose. Urgent fire. Stir fry with a shovel.

Note: Dan is tender if he has wet cream. Dan's overcooked plaster is old. Huang Dan will turn crimson during frying, so don't panic. Take it out and cool it, and it will return to its original color.

Step 2: Refining: put the alkali-free sesame oil into a clean pot, boil it with strong fire, and then change it to slow fire. At first, the gas of oil and water will rise linearly, and after a while, it will rise to the pot. If you use bamboo chopsticks to drop oil into cold water, the oil will turn into pearls, which becomes a hidden worry of refining. Sesame oil is sesame oil (pure soybean oil can also be used to reduce costs). If alkali is added to the oil, not only will it overflow, but the plaster will not stick.

The third step: fire. At this time, continue to boil the oil with low fire, slowly put the fried Dan into the boiled oil, and use locusts or willow branches. Continue to stir clockwise, the oil will overflow bubbles and smoke. When the smoke is slightly exhausted, use bamboo chopsticks to drop three or four drops of oil on cold water. Don't let the beads come loose, use them to wipe the water. Rub it with dry hands as much as possible, so as not to tire your hands when sticking them. Pay attention to the heat; Never stir with iron. At this time, the iron collided with the bottom of the pot, and a pot of plaster caught fire and was destroyed.

The fourth step; The surface of that adde powder is slightly cool by hot oil. Powder is slowly added to it. Stir with a wooden stick. When the oil becomes flat. Then add the fine powder.

The fifth step; Spread the plaster and put the plaster on it quickly. Make a ball with bamboo chopsticks and point the center of the cloth with bamboo chopsticks according to the size of the cloth. Spread it clockwise for a week, then the plaster will become a concern; Cotton cloth should be put into the cooked and warm batter, and stirred and kneaded well while it is hot. Put it on a high place to dry. This is pulp cloth, but the plaster is airtight and itchy. It will be fine in seven days.

Step six; Wash the skin with ginger slices before sticking plaster. In case of high allergy, sprinkle some peppermint ice on the plaster.

Bake on an alcohol lamp until soft. It can be paved.