Cheesecake that a member made them.
Alex said his trainer Elder O. is in these photos with some other missionaries when they were in Furukawa, where Alex is now. Looks like he took pictures of pictures. He said that you can see that this apartment has a couch and is known for being the only apartment in the mission with a couch.
Alex said he and his companion had to take a photo for a Christmas video and they thought this would be funny.