Babka
Darra Goldstein, professor of Russian at Williams College says "babka comes from baba, a very tall, delicate yet rich yeast-risen cake eaten in Western Russia and Eastern Poland." Traditional babka has some type of fruit filling, especially raisins, and is glazed with a fruit-flavored icing, sometimes with rum added. Modern babka may be chocolate or have a cheese filling.
Jewish version
chocolate babka, with streusel
Babka is popular among Jews, particularly those with family origins in Eastern Europe.
It is made from a doubled and twisted length of yeast dough and is typically baked in a high loaf pan. There is never a fruit filling; the dough contains either cinnamon or chocolate.
A similar cake called a kokosh is also popular in Jewish bakeries. Kokosh also comes in chocolate and cinnamon varieties, but it is lower and longer than babka, is not twisted, and not topped with streusel.
Babka of this style has become popular in North American cities with large Jewish populations, including Montreal, New York and Toronto.
This sort of babka was used as a MacGuffin in the Seinfeld episode "The Dinner Party."
Other than the dessert variety, there also exists a traditional Eastern European Jewish variety prepared during Passover in lieu of bread. Some Polish Jews refer to pancakes with these ingredients as bubbeleh, a name similar to babka.
Belarus and Lithuania: savoury dish
Belarusian Babka
Babka is also the name of a savoury dish, popular especially in Belarus and in Lithuania, where it is called bulvių plokštainis.
It is baked in a crock, and often served with a sauce of sour cream and pork flitch.