Macadamia satay sauce with barramundi

Name: Macadamia satay sauce with barramundi
Cook time: 30 min
Total time: 30 min
Cuisine: Moroccan, African
Ingredients: 5 tbsp boiling water; 2 tbsp tamarind pulp; 1 lge brown onion, finely chopped; 6 garlic cloves, chopped; 6 red bird's eye chillis, chopped; cup vegetable oil; Salt; Pepper; 160g palm sugar; 1 tsp ground turmeric; 200g macadamia nuts, crushed; 400ml coconut cream; 4 X 180g fillets barramundi, skin on, pin-boned