Make a thick curry sauce without Lemons in etc. Deseed quite a few hot chillies (seeds in Chillies would make the curry paste extremely hot,unless you used 1,or a 1/2 of 1),peel Ginger,add plenty of Garlic cloves,turmeric,Cumin Seeds,mild Curry Powder etc. Need too fry off the Spices in Cooking Oil,mainly Olive Oil with some Vegetable Oil added and chopped onions are added afterwards,so 10 minutes of just shallow frying and then add cold water,bring too the boil and then simmer for 30 minutes.