Buffalo Wild Wings Southwestern Ranch

Buffalo Wild Wings- you can say what you like about it but they serve a southwestern ranch sauce with their onion rings that is just incredible.

Has anyone else tried it? I think it comes with a few other appetizers.. and maybe on a salad? I know its pretty salty but i am just in love with the flavors in the sauce.

Anyway I have never been able to find a decent recipe for it or a decent store bought SW ranch. I've tried copycat recipes on the web and they just don't taste anything like it..

can anybody help?

I've asked if i can purchase just the sauce but they said it comes in a huge 3 gallon bag. I even offered to buy that but they wouldn't sell it to me.