→ Coffee Milk
                    
                      
                        01 - 
                        90g (1/3 cup + 1 tablespoon) whole milk
                      
                    
                      
                        02 - 
                        1 tablespoon coffee grounds
                      
                    
                  
                    → Tangzhong
                    
                      
                        03 - 
                        24g (3 tablespoons) all-purpose flour
                      
                    
                      
                        04 - 
                        100g (1/3 cup + 2 tablespoons) whole milk
                      
                    
                  
                    → Brioche Dough
                    
                      
                        05 - 
                        240g (2 cups) all-purpose flour
                      
                    
                      
                        06 - 
                        1 tablespoon granulated sugar
                      
                    
                      
                        07 - 
                        1 egg, room temperature
                      
                    
                      
                        08 - 
                        56g (4 tablespoons) unsalted butter, room temperature
                      
                    
                      
                        09 - 
                        1 1/2 teaspoons active dry yeast
                      
                    
                      
                        10 - 
                        1 teaspoon salt
                      
                    
                  
                    → Cinnamon Coffee Filling
                    
                      
                        11 - 
                        42g (3 tablespoons) unsalted butter, room temperature
                      
                    
                      
                        12 - 
                        100g (1/2 cup) light brown sugar
                      
                    
                      
                        13 - 
                        1 tablespoon coffee grounds
                      
                    
                      
                        14 - 
                        2 teaspoons ground cinnamon
                      
                    
                      
                        15 - 
                        2 tablespoons heavy cream or whole milk
                      
                    
                  
                    → Mascarpone Frosting
                    
                      
                        16 - 
                        226g (1 cup) mascarpone
                      
                    
                      
                        17 - 
                        2 tablespoons granulated sugar
                      
                    
                      
                        18 - 
                        2 teaspoons vanilla bean paste
                      
                    
                      
                        19 - 
                        1 teaspoon rum extract (optional)
                      
                    
                      
                        20 - 
                        Cocoa powder for dusting