Seed unpeeled orange and limes; finely chop. Pare apples and core; pare ginger. Coarsely chop apples and ginger. In a large saucepot bring orange, limes, apples, ginger and water to a boil; simmer, covered, until tender (about 40 minutes).

Add sugar and stir until dissolved. Bring to a boil and boil gently, uncovered, stirring often toward end of cooking, until thick (about 1 hour). Pack in containers. Store in freezer.

This recipe yields about 10 cups.