Grilled Fish with Pineapple Cilantro Sauce

26% calorie reduction from traditional recipe

1 can (20 ounces) sliced pineapple in juice, drained, reserving juice
3/4 cup reserved pineapple juice
2 tablespoons lime juice
2 cloves garlic, minced
2 tablespoons water
1 tablespoon cornstarch
2 tablespoons minced fresh cilantro
1 to 2 teaspoons minced jalapeno pepper
2 tablespoons Equal