I think grandpa likes this dish best. When he was a child, the old man called mash sauce.
Step1:Put water in the pot to boil. Cut the beans into 2 long sections and blanch them in the water. Blanch the beans and put them into the prepared cold water, then cut them into about 5cm. Mix the above condiments and beans according to your tast
Cooking tips:The beans must be over cooked when they are over water. There are skills about the best cooking and delicious food in 510 minutes after hot water.