01 - 
                        1 1/2 pounds thick cod or haddock fillets.
                      
                    
                      
                        02 - 
                        1 tablespoon butter.
                      
                    
                      
                        03 - 
                        1 tablespoon olive oil.
                      
                    
                      
                        04 - 
                        1/2 teaspoon kosher salt.
                      
                    
                      
                        05 - 
                        1/4 teaspoon white pepper.
                      
                    
                      
                        06 - 
                        1/2 teaspoon paprika.
                      
                    
                      
                        07 - 
                        1/4 teaspoon cayenne pepper.
                      
                    
                      
                        08 - 
                        1/4 teaspoon coriander.
                      
                    
                      
                        09 - 
                        4 cups shredded Napa cabbage.
                      
                    
                      
                        10 - 
                        1 cup crumbled Cotija cheese.
                      
                    
                      
                        11 - 
                        1/4 cup chopped cilantro.
                      
                    
                      
                        12 - 
                        1 avocado, diced.
                      
                    
                      
                        13 - 
                        18 six-inch tortillas.
                      
                    
                      
                        14 - 
                        2 limes, cut into wedges.