Cafe Rio's creamy tomatillo dressing

I LOVE THIS DRESSING! Its so good on so many different salads!

1 large jalepeno
1 clove garlic
1 tomatillo
1 handful cilantro leaves
1 lime (juice and rind)
1 cup milk
1 cup mayonnaise
1 package Hidden Valley Ranch Dressing mix

Directions:
Blend all ingredients except mayonnaise in blender until all the green pieces are very tiny.Whisk the mayonnaise and chill.