In a large bowl, combine the shredded green papaya, shredded carrots, cherry tomatoes, and green beans.
In a mortar and pestle, pound the Thai bird's eye chilies and garlic together until they form a rough paste. Alternatively, you can finely mince them if you don't have a mortar and pestle.
Add the fish sauce, lime juice, tamarind paste, and palm sugar to the chili-garlic mixture. Mix well until the sugar is dissolved.
Pour the dressing over the shredded papaya and other vegetables.
Toss everything together until well combined and the vegetables are evenly coated with the dressing.
Transfer the Som Tum to a serving plate.
Sprinkle with crushed roasted peanuts and garnish with fresh cilantro.
Enjoy your meal!