The meal is quite simple to make. The main ingredients are shredded green papaya, chopped green beans, tomoato, dried prawns, unsalted roasted peanuts, chillies, garlic and lime juice. These are all pounded together in a mortar using a pestle. The sound it makes is "pok pok". Whenever I hear that sound while walking down the street I always turnaround to look for the som tam stall.