Even if you have never tried cafe rio's tomatillo ranch... you still should try this. It actually makes me want to eat salad. I also use it as a veggie dip.
Tomatillo Ranch Dressing
1 regular ranch dressing packet
1 c. buttermilk
1 c. mayo (i used best foods fat free mayo and it was fine!)
1 tomatillo, peeled
1/2 bunch cilantro
1-2 garlic cloves (I usually use one large and one small clove)
Juice of 1 lime (2 if you like it more on the limey side.. but make sure to taste test as you go if you decide to add more lime)
1 jalapeno seeded (if you like spicy dressing you can leave some seeds in. But fair warning- I tried making it with all the seeds in once and my tongue was in a great deal of pain)
Put all ingredients in blender or food processor. Blend until mixed.