whenever you want authentic ethnic food, it is always a good idea to ask someone who is actually from the region for their favorite place to eat. my favorite restaurant, vanilia , in santorini was recommended by a greek, and the same greek recommended papa cristo's here in losangelesas the place he goes when he yearns for the comforting food of his homeland. papa cristo's is a greek institution, having been in business at the same location for nearly 60 years, owned by the same family. places that withstand economic turns and fickle tastes for decades do it by doing something well, in papa cristo's case they do several things well, from authentic greek dishes, to products from greece you can not find elsewhere in los angeles. i saw from the plates at the taverna that portions were huge, so i opted to take a bit of everything home because if i ate in the place, i would end up with most of it in a doggie bag anyway. their spanikopita ($2 each) is the best i have ever eaten, and yes, th