Put the mold and iron cover on the stove and use medium fire. Then we choose to dip the brush in water and oil, and smear the hole of the mold in time. Then we choose to pour the batter in the copper pot into the hole in turn. Then we can lift the mold and rotate it slowly to make the batter stick to the hole wall evenly. Then we put it on the stove in time, and then we chose to insert the bamboo pieces into the hole. Also scrape the batter to the fourth hole. Then we should choose to add 35g red bean paste and 5g diced sugar into each hole, then we should evenly sprinkle the prepared white sugar into each hole, and then we can fill the holes with batter when we are ready. Finally, we choose to sprinkle red and green silk into it, which is about 15g. At this time, we choose to cover the lid and burn it for 2 minutes. After opening the lid, sprinkle some sugar evenly. Everyone should be careful after opening the lid. The temperature is very high, so you should separate the plum cake from the mold with a shovel, and then choose to put it on the plate and start eating.