01 - 
                        Cream cheese, softened (4 ounces).
                      
                    
                      
                        02 - 
                        White sugar (1/4 cup).
                      
                    
                      
                        03 - 
                        Salt (1/8 teaspoon for filling).
                      
                    
                      
                        04 - 
                        Egg yolk, room temperature (1 for filling).
                      
                    
                      
                        05 - 
                        Sour cream (2 teaspoons).
                      
                    
                      
                        06 - 
                        Vanilla extract (1/4 teaspoon for filling).
                      
                    
                      
                        07 - 
                        All-purpose flour (2 cups).
                      
                    
                      
                        08 - 
                        Cocoa powder (2 teaspoons).
                      
                    
                      
                        09 - 
                        Salt (1/4 teaspoon for cookies).
                      
                    
                      
                        10 - 
                        Butter, softened (1 cup).
                      
                    
                      
                        11 - 
                        Brown sugar (1/2 cup).
                      
                    
                      
                        12 - 
                        Egg yolk, room temperature (1 for cookies).
                      
                    
                      
                        13 - 
                        Vanilla extract (1 teaspoon for cookies).
                      
                    
                      
                        14 - 
                        Red gel food coloring.
                      
                    
                      
                        15 - 
                        Red sanding sugar.