2 medium onions
½ tbsp butter
½ tsp – 1 tsp sugar / tbsp of milk – these are both ways to bring out the sweetness and reduce the acidic rasp of the tomatoes. Canned tomatoes seem to usually need some help.
1 fat clove of garlic (peeled)
1 large can or 2 normal sized cans of tomatoes – I use whole plum tomatoes and chop them in the can by wiggling my knife around.
1 tbsp capers
4 anchovy fillets
1 tsp chili flakes – to taste – depending on how hot your chili flakes are
½ cup chopped pitted black olives
Salt and pepper
Packet of spaghetti