Serves6
                    
                
                
                    
                        
                            - Active time:20 min
 
                        
                            - Start to finish:4 hr
 
                        
                    
                
             
            
            
                
                
                
    
      
          
          
          
              
              
              
          
          
          
          
          
              
              
              August 2008
            
          
          
      
  
                
                
            
            
            
                The combination of condensed milk and lime gives this dessert a bit of tropical flair.  
            
            
            
            
            
                
                    
                    
                    
                        
                            For Watermelon Sorbet
                            
                            
                                
                                    
                                        - 
                                            1
                                            
                                            (2 1/2-lb) piece of watermelon
                                            
                                        
 
                                    
                                        - 
                                            1/2
                                            cup
                                            sugar
                                            
                                        
 
                                    
                                        - 
                                            2
                                            tablespoons
                                            fresh lime juice
                                            
                                        
 
                                    
                                        - 
                                            1
                                            tablespoon
                                            tequila
                                            
                                        
 
                                    
                                
                            
                         
                    
                        
                            For Lime Semifreddo
                            
                            
                                
                                    
                                        - 
                                            1
                                            
                                            (14-oz) can sweetened condensed milk
                                            
                                        
 
                                    
                                        - 
                                            1
                                            teaspoon
                                            grated lime zest
                                            
                                        
 
                                    
                                        - 
                                            1/2
                                            cup
                                            fresh lime juice
                                            
                                        
 
                                    
                                        - 
                                            1/2
                                            cup
                                            chilled heavy cream
                                            
                                        
 
                                    
                                
                            
                         
                    
                 
            
            
            
            
            
                
                    
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Equipment:
                            
                            an ice cream maker
                         
                    
                
            
            
            
            
                
                    
                    
                    
                        
                            
                                Make watermelon sorbet:
                                
                                
                                    
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Line a 9-inch square baking pan (2 inches deep) with plastic wrap or parchment paper, leaving a 2-inch overhang. Put lined pan in freezer.
                                         
                                    
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Coarsely chop watermelon flesh (leave seeds in), then purée enough to yield 2 1/2 cups in a blender.
                                         
                                    
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Add sugar, juice, and tequila to purée and blend 30 seconds.
                                         
                                    
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Freeze sorbet in ice cream maker. Transfer to lined baking pan, smoothing top. Put in freezer to harden, at least 1 hour.
                                         
                                    
                                
                             
                        
                            
                                Make lime semifreddo:
                                
                                
                                    
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Whisk together condensed milk, zest, and juice. Beat cream until it just holds stiff peaks, then gently fold into condensed-milk mixture.
                                         
                                    
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Spread over sorbet, smoothing top. Freeze until solid, at least 2 hours.
                                         
                                    
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To serve, lift dessert from pan using plastic wrap. Cut into 12 bars and serve on chilled plates.
                                         
                                    
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                    Cooks’ note: Dessert can be frozen (covered once completely frozen) up to 3 days. Cut into bars just before serving.