1. Microwave 1/4 cup water at HIGH 45 seconds. Add crushed red pepper, and let stand 5 minutes. Pour through a fine wire-mesh strainer into a bowl, discarding liquid.
2. Process vinegar, next 5 ingredients, and 2 Tbsp. water in a food processor 5 to 10 seconds or until cilantro is finely chopped. Stir in crushed red pepper. Store in an airtight container up to 3 days.