CHUY'S JALAPENO RANCH SAUCE

I'm having a birthday dinner this evening.  I am doing a 'taco bar'.  Taco shells, meat and all the fixin's, rice and beans.  We have a Tex-Mex chain here called Chuy's.  They serve a jalapeno/ranch sauce when they bring out their chips and salsa.  It's really good.  I went in search of a copycat recipe and I think this one is pretty close. I'll serve this with some chips along with some regular salsa.

CHUY'S JALAPENO RANCH SAUCE

1 whole jalapeno, chopped, deveined and seeded (less if you don't like a lot of heat)
3-4 tablespoons cilantro without stems
1 cup mayonnaise
3/4 cup buttermilk
1/3 cup tomatillo sauce (salsa verde)
1 package Hidden Valley ranch dressing mix

In a mini food processor put mayonnaise, buttermilk, jalapeno, cilantro, and salsa verde.  Blend well until smooth.  Remove from processor and place in a bowl.  Add Hidden Valley Ranch mix and stir well.  Chill several hours before serving to allow flavors to blend.  Serve with chips or even as a dressing for salads.