Fish curry

I love this curry. I can't get cod cheeks very often so it is a real treat when I can make it.

1 onion
1 tbsp butter
1 tin chopped tomatoes
1 apple (eating type), cored, peeled and chopped
1 tsp - 1 tbsp curry powder (depending on your taste)
1 tsp branston pickle
1 lb cod cheeks

Chop the onion and saute gently in the butter until starting to colour. Add the curry powder and saute for another minute. Add the apple, tomatoes, cod and pickle and simmer gently until the fish is cooked through.