Ranch Dressing Made with Plain Yogurt

Ingredients

• 3/4 cup plain nonfat yogurt
• 1/2 cup light mayonnaise
• 2 Tbsp tarragon vinegar
• 1 Tbsp minced onion
• 2 tsp minced fresh parsley
• 1/4 tsp celery seed
• 1/4 tsp Dijon mustard
• 1/8 tsp garlic powder