Review of Bison County

I used to be a regular visitor to Bison before I was diagnosed as celiac,great food. When u went back a couple of months ago I asked for the GF menu as listed on their website and was told by the hostess all the food was listed on their menu (it's not) I spoke to the waitress and explained the issue and thought I had ordered very carefully; salmon, mashed potatoes & coleslaw but bottom line I got very sick. Not sure if it was a cross contamination issue from the grill or a filler in their mashed potato. I like Bison but I think I will have to stick to going for a glass of cider and leave the food alone.