Napa Cabbage Cole Slaw Salad

Ingredients (9)

• 1/3 cup light mayonnaise
• 1/3 cup plain Greek yogurt
• 1 Tbsp.  white vinegar
• 1 tsp.  sugar
• 1/2  tsp.celery salt
• Salt & pepper to taste
• 3 cups finely shredded Napa cabbage
• 2 cups finely shredded purple cabbage
• Red pepper flakes