Makes a lot! But you can store left-overs in jars.

1kg (35.3 oz.) apples (preferably sour), peeled and cut in thin slices.
250g (8.8 oz.) onions, finely chopped.
1 clove of garlic (I used 3), finely chopped.
375ml (12.7 fl. oz.) vinegar (while the original recipe suggests wine vinegar, I used cider vinegar)
500g (17.6 oz.) sugar (I would suggest 250-300g)
3 tbsp ground mustard seeds (I used freshly ground brown mustard seeds which are milder in taste)
2 tbsp of freshly grated ginger
1 ts cayenne pepper
250g (8.8 oz.) raisins