→ Beef Tenderloin
                    
                      
                        01 - 
                        1 whole beef tenderloin (2–3 pounds), trimmed and butterflied
                      
                    
                      
                        02 - 
                        Salt and black pepper, to taste
                      
                    
                      
                        03 - 
                        2 tablespoons olive oil
                      
                    
                      
                        04 - 
                        Butcher's twine
                      
                    
                  
                    → Shrimp Filling
                    
                      
                        05 - 
                        1 tablespoon unsalted butter
                      
                    
                      
                        06 - 
                        1 tablespoon olive oil
                      
                    
                      
                        07 - 
                        1/2 pound shrimp, peeled, deveined, and finely chopped
                      
                    
                      
                        08 - 
                        2 cloves garlic, minced
                      
                    
                      
                        09 - 
                        1 tablespoon fresh parsley or chives, chopped
                      
                    
                      
                        10 - 
                        Salt and pepper, to taste
                      
                    
                      
                        11 - 
                        Optional: pinch of chili flakes or splash of dry white wine
                      
                    
                  
                    → Béarnaise Sauce
                    
                      
                        12 - 
                        1/4 cup white wine vinegar
                      
                    
                      
                        13 - 
                        1/4 cup dry white wine
                      
                    
                      
                        14 - 
                        2 tablespoons finely chopped shallots
                      
                    
                      
                        15 - 
                        1 tablespoon fresh tarragon, chopped (plus extra for garnish)
                      
                    
                      
                        16 - 
                        3 large egg yolks
                      
                    
                      
                        17 - 
                        1/2 cup unsalted butter, melted and warm
                      
                    
                      
                        18 - 
                        Salt and white pepper, to taste
                      
                    
                      
                        19 - 
                        Optional: a few drops of lemon juice