Sambal kachang (spicy peanut sauce)

Sambal kachang This quantity will make about 1 ½ cups of sauce 1 cup of freshly roasted peanuts (raw peanuts with skin) or bought roasted peanuts (you can use peanut butter if you want but only about ½ cup) 1 – 2 tsp of shrimp paste 1 - 3 red chillies, deseeded ½ cup of coconut milk from a tin Some tamarind juice (much as you like), use reconstituted tamarind pulp or ready to use