01 - 
                        12 small sandwich rolls (suggest King’s Hawaiian).
                      
                    
                      
                        02 - 
                        1/4 cup of mayo.
                      
                    
                      
                        03 - 
                        1 tablespoon of creamy horseradish.
                      
                    
                      
                        04 - 
                        8 ounces of Swiss or provolone slices.
                      
                    
                      
                        05 - 
                        8 ounces of thinly sliced roast beef from the deli.
                      
                    
                      
                        06 - 
                        1/2 cup of cooked, sweet onions.
                      
                    
                      
                        07 - 
                        4 tablespoons of melted butter, unsalted.
                      
                    
                      
                        08 - 
                        1 teaspoon of Worcestershire.
                      
                    
                      
                        09 - 
                        1/2 teaspoon of powder made from onions.
                      
                    
                      
                        10 - 
                        1/4 teaspoon of garlic powder.
                      
                    
                      
                        11 - 
                        About 1/2 tablespoon fresh, chopped parsley (plus extras to sprinkle).
                      
                    
                      
                        12 - 
                        Around 2 cups of beef stock or broth (used for jus).
                      
                    
                      
                        13 - 
                        2 tablespoons of unsalted butter (for making jus).
                      
                    
                      
                        14 - 
                        1 minced clove of garlic (for making jus).
                      
                    
                      
                        15 - 
                        1.5 tablespoons plain flour (optional for jus).
                      
                    
                      
                        16 - 
                        1 tablespoon Worcestershire sauce (for jus).
                      
                    
                      
                        17 - 
                        1-2 teaspoons of roasted beef concentrate (optional, for jus).
                      
                    
                      
                        18 - 
                        Either 1 teaspoon fresh thyme or 1/4 teaspoon dried thyme (for jus).
                      
                    
                      
                        19 - 
                        A bit of kosher salt and freshly cracked black pepper (for jus).