Creamy Tomatillo Ranch Dressing

I guess this is a copy cat recipe from Cafe Rio.

1 package of Buttermilk Ranch dressing prepared according to directions
2 Tomatillos
1 Jalapeno
1/2 bunch of cilantro
juice from one lime
1 clove garlic

Add all ingredients into a blender until smooth.

I actually used buttermilk and mayonnaise for the ranch dressing. It says you can substitute milk for the buttermilk but I like the tanginess that buttermilk adds to the dressing.