(Another) Cafe Rio Cilantro Ranch Dressing

I think i've tried over a dozen different recipes, but my friend Natalie here in Texas made this tonight and it was by far my favorite!!!1 ranch dressing packet

1 cup mayo

1 cup buttermilk (or just reg. milk)

1/2 bunch cilantro

2 tomatillos

juice of one lime

1/2 clove garlic

Mix in blender!