I use Penzey’s homemade ranch dressing mix and you just mix it with mayonnaise and buttermilk. It’s super easy, but I have to order the mix from Penzey’s because we don’t have one in Little Rock. It tastes great and it doesn’t have additives in it. I have wondered if Whole Foods carries one though. You might check. Here’s the link for the Penzey’s : http://www.penzeys.com/cgi-bin/penzeys/p-penzeysbuttermilk.html