1. green beans clean, pick off the bad (in the water floating on top of the general is bad), soaked in water for half a day.

2. pressure cooker, high heat boil. 3. medium-low heat cook to the green beans a twist on the degree of rotten, be sure to use a small fire, in order to make the beans inside the cooked and the outer skin is still intact, otherwise the green beans will be all blossomed into a large amount of water, to the back of the stuffing into a significant impact. 4. to find a sieve, the bottom of the catch a pot, to find a large spoon crushed so that the stuffing and the skin are separated. 5. frying pan put some oil, add the stuffing. Sauté the filling over low heat, add maltose (no sugar can be used), the amount of sugar as you like.6. Stop stirring, beware of paste pot, to the filling water to reduce can be formed into a ball.