From Vegetarian Times

• 1/2 cup rice vinegar
• 1 tablespoon sherry (optional)
• 1/8 teaspoon ginger
• 2 cloves garlic, chopped
• 2 tablespoons apple juice concentrate
• 1 tablespoon soy sauce
• 1 tablespoon cornstarch
• 1/4 cup cold water

In a small saucepan, combine all ingredients except cornstarch and water.  Bring to a simmer.  Cover and simmer for 10 minutes.  Remove from heat.  Using a slotted spoon, discard garlic.  Dissolve cornstarch in water and stir into sauce.  Simmer, stirring constantly, until sauce thickens slightly, about 2 minutes.  Transfer to a small bowl; cover and refrigerate until thoroughly chilled.  Use as a dipping sauce for Spring Rolls.