We were looking forward to meeting friends for our first visit to this place, but when we arrived they were standing out front with the owner, who explained that they were closed because of a venting issue. They had tried to reach everyone who had made a reservation, but somehow they had missed us (and I had snagged a perfect parking place right next door, nearly unheard of in the South End!). After a brief conference, we decided to follow the owner's suggestion and we all trooped across the street to the South End Buttery, where the YZ owner explained what had happened and asked if they could give us a table. We were promptly seated and had a perfectly nice meal, although I did miss those Japanese skewers. At the end, instead of the check, the YZ owner's card was put on our table and we were told that our meal was comped. Thank you, Yakitori Zai, we hope you are back up and running soon so we can give you another try!