A true hit or miss experience on all accounts.
As long as I have lived in Ohio City I have heard the hype around Great Lakes Brewing Company. The first few times I went to the restaurant it was just downright bad. They had run out of half the menu and the service was bad. Now that I have been a few more times I realize this is not a constant. I have had really awesome experiences and really bad ones. There have been times the food has been oh so yummy while you could hardly get the attention of the server for another beer. Other times of greasy or otherwise unsavory food with good service. Still other times both service and food have been lacking.
In general the space is nice and cozy. A nice pub atmosphere. The ingredients they use are very high quality and locally obtained when possible and they are a green company that tries to reduce their waste wherever they can which are both admirable attributes. The beer list offers something yummy for everyone from the light pale ales to the dark porters and stouts. The beer is the only aspect of the dining experience at the brewery which has been of constant quality.
What I recommend:
Cheddar Stilton beer soup
Any of the burgers
Portobella mushroom sandwich
Salads
The pretzels
Edmund Fitzgerald Porter (and the chocolate chunk ice cream)
Elliot Ness Lager
Conway's Irish Ale
Hit or miss
Pizzas
Pretzel Chicken (sometimes it is way too greasy)
Pasta (daily concoctions sometimes leave something to be desired)
Avoid:
Irish Stew (reminded me of baby food)
Any dish with rice (the rice is never properly cooked)
Overall: Try at your own risk. If you get a skinny female server with glasses just run.