From: Cooks.com

1 tbsp cornstarch
¼ cup sugar
2 tbsp white vinegar
¼ cup pineapple juice
1 tsp soy sauce
2 tbsp water
Combine ingredients in a small saucepan; whisk well.
Bring to a boil, then simmer gently until thickened. Remove from heat.
Put in a small bowl and offer at the table as a dipping sauce.
Ingredients
1 tbsp cornstarch
¼ cup sugar
2 tbsp white vinegar
¼ cup pineapple juice
1 tsp soy sauce
2 tbsp water