Serves6 to 8
                    
                
                
                    
                        
                            - Active time:25 min
 
                        
                            - Start to finish:6 hr
 
                        
                    
                
             
            
            
                
                
                
    
      
          
          
          
              
              
              
          
          
          
          
          
              
              
              August 2009
            
          
          
      
  
                
                
            
            
            
                A semifreddo is an Italian soft-frozen custard mousse. Grappa, which is floral and just a little edgy, bumps the musky, intoxicating sweetness of the melon up a notch. 
            
            
            
            
            
                
                    
                    
                    
                        
                            
                            
                            
                                
                                    
                                        - 
                                            1
                                            lb
                                            peeled and chopped cantaloupe (about 2 1/2 cups)
                                            
                                        
 
                                    
                                        - 
                                            1/3
                                            cup
                                            plus 2 Tbsp sugar, divided
                                            
                                        
 
                                    
                                        - 
                                            1/4
                                            cup
                                            grappa (preferably grappa di Moscato d’Asti)
                                            
                                        
 
                                    
                                        - 
                                            3/4
                                            teaspoon
                                            grenadine (for color; optional)
                                            
                                        
 
                                    
                                        - 
                                            1/8 
                                            teaspoon
                                            salt
                                            
                                        
 
                                    
                                        - 
                                            5
                                            
                                            large egg yolks
                                            
                                        
 
                                    
                                        - 
                                            3/4
                                            cup
                                            heavy cream
                                            
                                        
 
                                    
                                
                            
                         
                    
                 
            
            
            
            
            
                
            
            
            
            
                
                    
                    
                    
                        
                            
                                
                                
                                
                                    
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Line loaf with plastic wrap, leaving an overhang at each end. 
                                         
                                    
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Purée melon with 1/3 cup sugar, grappa, grenadine (if using), and salt in a blender until smooth. Transfer to large metal bowl and stir in yolks. Set bowl over a saucepan of simmering water and beat with mixer until pale, thick, and tripled in volume and registers 170°F on an instant-read thermometer, about 8 minutes.
                                         
                                    
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Remove bowl from saucepan and set in a large ice bath. Continue to beat until cold, about 6 minutes.
                                         
                                    
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Beat cream with remaining 2 Tbsp sugar in other large bowl using cleaned beaters until it just holds soft peaks. Fold whipped cream into cantaloupe mixture gently but thoroughly.
                                         
                                    
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Pour mixture into pan and freeze, loosely covered with plastic wrap, until firm, at least 5 hours.
                                         
                                    
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Uncover top and invert semifreddo onto a plate.
                                         
                                    
                                
                             
                        
                    
                    Cooks’ note: Semifreddo keeps 1 week.