Add some buttermilk. Start with about an 1/8 of a cup and then add a little at a time until you have the right consistency. Buttermilk gives it that tang. You can definitely use regular milk, in fact I've made it with milk before and it came out great. It's really up to you.
Yum! Chunky, creamy, decadent buttermilk blue cheese dressing. So easy, so homey.
Holla back and stay hungry!