  | 
                          1 lb 2 oz (500 g) sole filet or similar, trimmed | 
                        
                      
                      
                      
                        
                            | 
                          2 cups arugula leaves, rinsed and dried | 
                        
                      
                      
                      
                        
                            | 
                          ½ cup white onion, finely chopped and blanched | 
                        
                      
                      
                      
                        
                            | 
                          ½ cup extra virgin olive oil | 
                        
                      
                      
                      
                        
                            | 
                          ¼ cup red pepper, seeded and deveined, diced | 
                        
                      
                      
                      
                        
                            | 
                          2 green onions (green part), for decoration |