I use the recipe out of Hugh Fernley Whittingstall's book and its nice if not a little too sweet...That ones not on line but this one was and most of his things seem to work:
This easy sauce is delicious with deep-fried squid, tempura vegetables and Thai fish or crab cakes. It will keep, sealed in a jar, for a week, and is the perfect thing to perk up all manner of dressings and marinades. Before serving, when the sauce is cool, add some chopped coriander if you like, too.
3 tbsp redcurrant or crab apple jelly
1 tbsp cider vinegar
1 tsp soy sauce
1 red chilli, deseeded and very finely chopped
1 small garlic clove, very finely chopped
A few twists black pepper
Tip all of the ingredients into a small saucepan and stir over a very low heat until the fruit jelly has dissolved and you are left with a silky syrup.
Bring up to a simmer and allow to bubble gently for a few minutes – this will mellow the harshness of the garlic. Set aside to cool and serve at room temperature. If the sauce re-sets to a jelly when it's cool, simply whisk in a splash of warm water.
Obviously beef up the chilli quantities!