In a medium bowl, whisk together the ingredients for the dressing except for the salt and pepper.
½ cup mayonnaise, 2 tablespoons freshly squeezed lime juice, 1 tablespoon lime zest, 1 teaspoon granulated sugar, ¼ teaspoon garlic powder
Taste the dressing, then add the salt and pepper to your taste preference.
Salt and pepper
Set the dressing in the fridge while you assemble the ingredients for slaw.
Place the slaw ingredients into a large bowl. Pour the lime dressing over the cabbage mixture and toss to combine.
3 cups green cabbage, 2 cups purple cabbage, ¼ cup purple onion, 2 tablespoons fresh cilantro
Serve immediately!