We walked to The Mitten Brewing Co. on the way back into downtown Grand Rapids from Greyline Brewing Co. Mitten Brewing is a vintage baseball themed microbrewery/pizzeria housed in the historic Engine House #9. We just stopped for one pint but we did hear the pizza was very good. Lots of baseball decorations and I had the Relief Session IPA which was very good. It was pretty busy when we were there in July 2018 on a SAT afternoon. Check out their website for more info: http://www.mittenbrewing.com/