I think the appetizers (firsts and seconds on the menu) are the stars of the show at Greenhouse Tavern.
Some of my group got the chef's tasting menu for $39 (choose your four courses) and we all shared a lot of the apps. The crispy chicken wings, braised lamb and devils on horseback (bacon wrapped dates with bitter chocolate) were all fantastic. I had the Steak Frites for dinner which was also good but those appetizers were just so memorable.
They carry different flavors of Jeni's Ice Creams from Columbus on their menu which I love after being in Cbus the last four years.
On a somewhat unrelated note we had a great table for people watching on the second floor by the window. We watched a drunk girl totally face plant in a mud puddle during dinner. The police officer came over to chat with her as she continued to accidentally rip flowers out of the flower box while trying to stand up. There are some interesting things to watch on East 4th I suppose.
Great place. Highly recommend!