The dumplings should be cooked in a pressure cooker for about 30-40 minutes.
Pressure cooker boil over high heat, when the steam began to emerge when the pressure valve cover, and then turn to medium-low heat to cook for 30 minutes, and then turn off the fire to simmer for 20 minutes, and finally remove the pressure valve, the pot of steam completely released can be; such as using ordinary saucepan cooking, water boiling after the medium heat also need to cook more than 2 hours.
No matter how many dumplings must be diffused over the height of one finger of the dumplings, and then after the dumplings cool water in the pot, because the water is more than one, some dumplings will float on the top, so that the dumplings floating on the top will be pinched, so you have to put a small steam drawer on top of the dumplings, and put a heavy weight on the small steam drawer to put a dumplings steadily pressed in the water, and if you're a high-pressure cooker, you'll need to put a heavy weight on the dumplings.
Expanded Information
Note:
Sticky rice only soaked for 1~2 hours, can't wrap dumplings. Friends said that the method of dumpling factory is the proportion of glutinous rice and water is 1:2, soak at least 5 hours, more or less can not. Soak for 5 hours, the glutinous rice can fully soak up, if less than 5 hours, absorb less water can not fully soak up, cooked rice dumplings are easy to leak rice, folder raw.
If more than 5 hours, the glutinous rice absorbs too much water to become soft, cooked taste is not good, so soak enough 5 hours can be, to ensure that the rice dumplings cooked very soft and sticky.