I find this great with pork sausages. But then I like marmalade with them as well.
Orange Marinade
2 oz apple cider vinegar
2 tbsp soy sauce
1 tsp garlic, minced
2 oz undiluted orange juice concentrate (not squash)
2 tbsp lemon juice
Whisk together all ingredients. Pour over sausages and leave for at least 1 hour before cooking.