Pad Prik Khing Nueaw (Beef Fried in Prik Khing Curry Paste with Long Beans)

Ingredients

• For the Prik Khing curry paste:
• 1 teaspoon salt
• 4 dried chilis, soaked in water and finely sliced
• 1 small garlic bulb worth of garlic cloves,finely sliced
• 3 shallots, finely sliced
• 1 coriander root, finely sliced
• 1 cm piece of galangal, finely sliced
• 1 bottom third piece of lemongrass, finely sliced
• rind of half or whole kefir lime (depending on size), finely sliced
• 5 white peppercorns, finely ground
• 2 teaspoons shrimp paste
• 1 tablespoon dried shrimp, ground
• For the stir-fry:
• 1 + 1 tablespoon oil
• 300 g pork loin, thinly sliced
• 250 g long beans, cut into 4 cm sections
• 1 tablespoon palm sugar, or more to taste
• 1 tablesppon fishsauce, or more to taste
• 6 keffir lime leaves, very thinly sliced