Ming Tsai's Three-Vinegar Syrup

SERVES 8 , 1/2 cup

Ingredients

* 2 cups balsamic vinegar
* 2 cups rice wine vinegar
* 1/2 cup chinese black vinegar or an additional 1/2 cup balsamic vinegar plus 1 piece star anise

Directions

1. In a nonreactive saucepan, combine the vinegars (and star anise, if using) and bring to a simmer over low heat. Continue to simmer until the mixture is reduced by about 80 percent and thickly syrupy, 1 to 1 1/2 hours. (If using the star anise, remove it after the first 30 minutes of cooking.) To test for proper consistency, drizzle a little of the syrup on a chilled plate. It should keep its shape when the plate is tilted. Use or store in refrigerator; will keep for 4 weeks.