Khachapuri is a traditional national Georgian dish of cheese-filled bread. The bread is leavened and allowed to rise, and is shaped in various ways, usually with cheese in the middle and a crust which is ripped off and used to dip in the cheese. The filling contains cheese, eggs and other ingredients. There are several distinctive types of khachapuri in different regions of Georgia: Imeretian (circular and the most common), Adjarian (the dough is in boat shape and the hot pie is topped with a raw egg and a pat of butter before serving), Mingrelian (similar to Imeritian but with more cheese added on top), Achma (has multiple layers and looks more like a sauce-less lasagna), Ossetian (has potato as well as cheese in its filling), and Penovani (made with puff pastry dough, resulting in a flaky variety of the pie). Khachapuri is popular in the post-Soviet states as well, including Russia and it was reported that 175,000 khachapuris were consumed during the 2014 Winter Olympics in Sochi. It is a popular street food in Armenia, where it is widely served at restaurants and school cafeterias.