Heat oil in the pan. Add the mixture of beans and spice to fry. Add minced pork, tomatoes and stir to combine. Then add the water from boiling pork. Put finish fried ingredients back into the pot that boiling pork rib. Turn to medium heat and wait to boil. Then add Curdled Blood of Hogs, Dok Ngeaw and simmer over low heat. If the water dries out, pour water down. Continue simmering, taste salty and sour. salt, tamarind juice