I usually bet burgers plain to start. It has to stand alone first. I got the Bison Burger, $15.00. It was dry, I expected a dryer burger because the lack of fat in Bison. Asked for Medium Rare, got Medium-Medium well. I took a picture then enhanced it, to deepen the color. I suggest you use the burger as a delivery system for toppings. Put 3 of the strongest toppings, maximum sauces to give it flavor. I would happily pay $5.00 or $6.00 for this burger. I have had bison fir years, most of the time it has flavor, sometimes it tastes of feed lot.... No taste at all. In fact I suggest you bring your own cheese, a Limburger, Maytag, or one of the strongest cheeses to give it something! About a table spoon of Tobacco Sauce or Dragons tongue pepper would help as well.
The burger was from frozen bison and had to have been pressed, and turned serval times to get it that dry. For $15.00 I expect fresh not frozen meat!
The wait staff was very good. I will not penalize the waitress to inferior food.... Or fast food quality burger.