Add buttermilk, sour cream, and mayo to the bowl and combine.
Mix in cilantro, salt, pepper, lime juice, and water and stir until completely mixed together.
Serve with salad or wraps!
Notes
Mince cilantro until very fine or use a food processor to make sure the cilantro is fine. The texture will be noticeable in the dressing if it is leafy.
You can use low-fat buttermilk in the recipe and have similar results.
Expect the dressing to be more loose than a typical ranch.