Look for pomegranate molasses in Middle Eastern markets and health-foods stores. Its strong flavor makes this dressing better suited to pasta salads than green salads. As a marinade, it's best with pork, dark-meat chicken, and salmon.
Combine all ingredients except oil, stirring with a whisk. Gradually add oil, stirring constantly with a whisk until well combined.
Note: Refrigerate dressing in an airtight container for up to five days; stir well before using.