I was at the Original Goose Island Brewpub in Chicago last night. The guest beer on tap was Boon Mariage Parfait Gueuze. Remembering how good it was at the Hop Leaf last week, I had to make it one of my beers for the evening. I wanted to get a taster of it so that my friend could taste it. The waitress informed me that they weren’t doing tasters of it because their single keg had cost $500. That is one costly keg.