1. Combine garlic and chilis in a mortar and pestle. Pound until chilis are broken apart and garlic is finely ground. 2. Add palm sugar and pound until sugar starts to dissolve. 3. Add peanuts and pound until broken into small pieces. 4. Add beans and pound a couple times to break them apart. 5. Add tomatoes and green papaya together and pound, focusing on the papaya until the strands all feel tender and look slightly damp. 6. Add fish sauce and lime juice. Use a large spoon or spatula, alternate scooping and turning the ingredients and pounding them with the pestle so that everything gets mixed together. Be sure that you’re scooping up any of the garlic, chilis, and sugar that might be stuck to the bottom. 7. Taste a strand of papaya and add more fish sauce or lime juice, to taste. (If you’d like it a bit more sweet, soak the palm sugar in a tiny bit of hot water to soften it first so that it gets distributed evenly.) Give everything a final mix with the spoon / pestle. 8. Serve immediately!