How to get Baton Rouge's restaurants honey mustard dressing?

I would like to know if there is anyone who knows the recipe for the restaurant called Baton Rouge's honey mustard dressing? or anything similar to it if someone has had it before. The restaurant makes it from scratch. I am trying to make it for a friends birthday gift, it's their favourite dressing and I don't know how to get it, so if anyone could help, that would be great. Thanks