Makesabout 1 1/2 cups
                    
                
                
                    
                        
                            - Active Time:20 min
 
                        
                            - Start to Finish:1 1/2 hr (includes chilling)
 
                        
                    
                
             
            
            
                
                
                
    
      
          
          
          
              
              
              
          
          
          
          
          
              
              
              January 2007
            
          
          
      
  
                
                
            
            
            
                The malty flavor of stout lends welcome contrast to this sweet, creamy dessert sauce. Try it over a bowl of vanilla ice cream or fresh fruit. It’s also wonderful with the chocolate stout cake.Watch this Diary of a Foodie episode and view its accompanying recipes.  Plus, explore all episodes and more recipes from the show. 
            
            
            
            
            
                
                    
                    
                    
                        
                            
                            
                            
                                
                                    
                                        - 
                                            1
                                            cup
                                            stout such as Mackeson or Guinness (pour beer slowly into measuring cup; do not measure foam)
                                            
                                        
 
                                    
                                        - 
                                            5
                                            
                                            large egg yolks
                                            
                                        
 
                                    
                                        - 
                                            3/4
                                            cup
                                            packed light brown sugar
                                            
                                        
 
                                    
                                        - 
                                            1/4
                                            cup
                                            heavy cream
                                            
                                        
 
                                    
                                        - 
                                            1
                                            teaspoon
                                            vanilla
                                            
                                        
 
                                    
                                
                            
                         
                    
                 
            
            
            
            
            
                
            
            
            
            
                
                    
                    
                    
                        
                            
                                
                                
                                
                                    
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Bring beer just to a boil in a small heavy saucepan, then remove from heat.
                                         
                                    
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Whisk together yolks, brown sugar, and a pinch of salt in a medium bowl until combined well. Whisk in cream and vanilla, then add hot beer in a slow stream, whisking constantly. Transfer to saucepan and cook over moderately low heat, stirring constantly with a wooden spoon, until custard is thickened and registers 175°F on thermometer (do not let boil), about 5 minutes.
                                         
                                    
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Pour custard sauce through a fine-mesh sieve into a metal bowl, then set bowl in a larger bowl of ice and cold water and stir until cool. Remove from ice bath and refrigerate, covered, until cold, at least 1 hour.
                                         
                                    
                                
                             
                        
                    
                    Cooks’ note: Sauce can be chilled up to 2 days.