Milky Purple Sweet Potato Xiaofang
                            
                                1.
                                Purple sweet potato peeled and sliced, steamed in a pot, about 20 minutes
                                    
                            
                            
                                2.
                                After being steamed, rolled into a puree for later use
                                    
                            
                            
                                3.
                                Add 50 grams of milk to the cornstarch and stir well for later use
                                    
                            
                            
                                4.
                                Pour the remaining milk into the purple potato mash, mix well
                                    
                            
                            
                                5.
                                Pour into a blender and whipped into milk purple potato paste
                                    
                            
                            
                                6.
                                Transfer to a small pot, add sugar, and stir while boiling
                                    
                            
                            
                                7.
                                Add milk starch water and continue to cook, stirring constantly while boiling
                                    
                            
                            
                                8.
                                Cook until half set and add yogurt
                                    
                            
                            
                                9.
                                Quickly stir and turn off the heat immediately
                                    
                            
                            
                                10.
                                Prepare the container and spread coconut paste on the bottom of the bowl
                                    
                            
                            
                                11.
                                Pour the prepared purple potato mash into a bowl, smooth it out, and refrigerate for 2 hours
                                    
                            
                            
                                12.
                                Take out the undercut and demould, cut into pieces
                                    
                            
                            
                                13.
                                Just wrap a layer of coconut paste
                                    
                            
                            
                                Tips: 
                                Low heat throughout the process