Gulai Cumi-Cumi (Squid Curry Recipe)

1 medium onion, peeled and finely chopped

2 cloves garlic, peeled and crushed

1 teaspoon finely grated fresh ginger

1 teaspoon salt

1 teaspoon chili powder

1/2 teaspoon dried shrimp paste (trasi)

1 3/4 cups coconut milk

4 kemiri nuts or brazil nuts, grated

1 stalk lemon grass, finely sliced or 1 teaspoon grated lemon rind

1 teaspoon palm sugar or substitute

4 tablespoons tamarind liquid or lemon juice to taste