Heat olive oil and fry onions till they turn softly coloured. Add the spices - cumin, paprika and curry. Fry while stirring continuously. Add the tomato sauce to the saucepan, fry for 2 - 3 minutes, then add the coconut milk Stir to mix thoroughly, add a stock cube and season to taste. reduce heat to low - medium and simmer covered for 30 minutes.