Cube tempeh, set aside
Soak tamarind in hot water, squeeze to combine and produce tamarind juice
Heat oil on medium heat and saute everything, but tempeh cubes
Stir in tamarind juice and coconut milk
Stir in tempeh cubes
Cook until liquid soaked up, stirring occasionally
Let tempeh cooled down then thread tempeh cubes on skewers
Preheat your griller
Drizzle tempeh with sweet soy sauce, grill on low heat until browning a little
Serve with the sauce!