Serves3 or 4 (main course)
                    
                
                
                    
                        
                            - Active time:1 hr
- Start to finish:1 hr
 
            
                
            
            
                
                
                
    
      
          
          
          
              
              
              
          
          
          
          
          
              
              
              May 2008
            
          
          
      
  
                
                
            
            
            
                Pounding the spice paste with a mortar and pestle is hard work, but Prasan ("Pip") Fargrajang insists that’s what brings out all the nuanced flavors. Our advice: Make a few batches of the paste and freeze them for another time.
            
            
            
            
            
                
                    
                    
                    
                        
                            For seasoning paste
                            
                            
                                
                                    
                                        - 
                                            1
                                            
                                            stalk fresh lemongrass, root end trimmed and 1 or 2 outer layers discarded
                                            
                                        
- 
                                            3
                                            
                                            (2- to 3-inch) dried hot Thai chiles, including seeds
                                            
                                        
- 
                                            3
                                            tablespoons
                                            minced shallot
                                            
                                        
- 
                                            2
                                            tablespoons
                                            minced garlic
                                            
                                        
- 
                                            2
                                            tablespoons
                                            shrimp powder or 1 1/2 tablespoons dried peeled shrimp (see cooks’ note, below)
                                            
                                        
- 
                                            1
                                            teaspoon
                                            minced cilantro root or stem
                                            
                                        
- 
                                            1
                                            teaspoon
                                            minced Kaffir lime zest or regular lime zest
                                            
                                        
- 
                                            1
                                            teaspoon
                                            minced peeled galangal (fresh or thawed frozen)
                                            
                                        
- 
                                            1
                                            teaspoon
                                            kosher salt
                                            
                                        
- 
                                            5
                                            
                                            black peppercorns
                                            
                                        
- 
                                            1
                                            teaspoon
                                            Thai shrimp paste
                                            
                                        
 
                    
                        
                            For beans and pork
                            
                            
                                
                                    
                                        - 
                                            1/2
                                            lb
                                            long beans or green beans, cut into 1-inch pieces
                                            
                                        
- 
                                            3/4
                                            lb
                                            boneless pork shoulder
                                            
                                        
- 
                                            3
                                            tablespoons
                                            peanut or vegetable oil
                                            
                                        
- 
                                            1
                                            tablespoon
                                            Asian fish sauce
                                            
                                        
- 
                                            1
                                            tablespoon
                                            packed grated palm sugar or light brown sugar
                                            
                                        
- 
                                            3
                                            
                                            medium Kaffir lime leaves (fresh or thawed frozen; 2 sections each), ribs discarded and leaves minced
                                            
                                        
 
                    
                 
            
            
            
            
            
                
            
            
            
            
                
                    
                    
                    
                        
                            
                        
                            
                                Cook beans and pork:
                                
                                
                                    
                                        - 
                                            
                                            Cook beans in a medium saucepan of boiling salted water (1 teaspoon salt for 2 quarts water), uncovered, until crisp-tender, about 3 minutes. Drain and transfer to a bowl of cold water to stop cooking. Drain again. 
- 
                                            
                                            Pat pork dry, then cut across the grain into 1/8-inch-thick slices (about 2 by 1 inch). 
- 
                                            
                                            Heat oil in a 12-inch skillet over high heat until it shimmers, then cook seasoning paste, stirring constantly, until fragrant, about 1 minute. Add pork, tossing to coat, then spread out in skillet and brown, turning occasionally (to keep paste from burning), about 2 minutes. Add fish sauce, palm sugar, and beans and cook, tossing, until pork is just cooked through and beans are hot, about 1 minute. Remove from heat and toss with lime leaves. 
 
                        
                    
                    Cooks’ notes: - If using dried shrimp, grind to a powder in an electric coffee/spice grinder or use mortar and pestle.
- Seasoning paste can be made ahead and chilled, covered, up to 1 week or frozen 1 month.