1 tbsp sesame seeds
2 tbsp cashews (or walnuts or peanuts)
3-4 tbsp steamed/boiled pumpkin (or other winter squash, sweet dumpling squash is good)
A few coriander leaves
1 tsp soy sauce

Smash the sesame seeds and cashews in a mortar and pestle (or food processor).  Add the pumpkin, leaves, and sauce.

Source: May Kaidee’s Thai vegetarian and vegan restaurant and cooking school, May 2010