Food you must try at Union: EVERYTHING
I honestly can't narrow it down because literally every meal I have eaten at Union has been delectable.
Definitely check out brunch on Sundays. It costs the same as most brunch places but tastes way better, they serve oysters too. Union is open consistently throughout the week for coffee and croissants in the morning, lunch and dinner: all of it is amazing too.
Go hungry. Split the prime rib dinner for two. If you get an app of charcuterie and a salad I won't blame you, but you'll be bringing a doggy bag home with you, because it's a lot of food! The charcuterie here is really good and always varies - you know it's freshly made.
Great patio in the summertime. Another unique spot is a seat at the bar viewing the kitchen. Watch those people cook!