Watercress Soybean Big Bone Soup
                            
                                1.
                                Material preparation~Soybeans sent in the supermarket~
                                    
                            
                            
                                2.
                                After the keel is boiled, pour out the blood water, add fresh water and continue to cook.
                                    
                            
                            
                                3.
                                Put the soybeans in a boil for 2 hours, you can add a small amount of water.
                                    
                            
                            
                                4.
                                Finally, add watercress and let it boil together for another 1 hour.