01 - 
                        1 small onion, diced finely.
                      
                    
                      
                        02 - 
                        ¼ cup unsalted butter, softened.
                      
                    
                      
                        03 - 
                        ½ pound medium shrimp, deveined and peeled.
                      
                    
                      
                        04 - 
                        2 garlic cloves, minced.
                      
                    
                      
                        05 - 
                        ½ pound lump crabmeat, clean of shells.
                      
                    
                      
                        06 - 
                        ¼ cup plain flour.
                      
                    
                      
                        07 - 
                        Salt and pepper, as needed.
                      
                    
                      
                        08 - 
                        1 cup heavy cream, chilled.
                      
                    
                      
                        09 - 
                        4 cups chicken or seafood broth.
                      
                    
                      
                        10 - 
                        A handful of fresh parsley for topping.