So here's the thing, you can't "de-glutenize" beer. If we could de-glutenize wheat, we'd do it for bread and everything else. It's good but if you're celiac, you will get sick. There isn't a gluten free food menu, but the sausage plate is GF. Get the curry sauce, trust me it's a German classic.
Finally gluten free beer in several varieties. This bar lets you bring in your own food because they really don't serve more than a few snacks. Get a flight. Wonderful to have a stout or porter again.
The only microbrewery I know of that specialises in deglutinized beer. Excellent beer by anyone's standard. Now all they need is a good gluten free menu and it will be like you died and went to heaven.