This image is from https://www.jenreviews.com/babka/.

Babka

A brief history, from https://www.jenreviews.com/babka/:

Babka is originally from Eastern Europe, although its exact origins are unknown. Whether itís a Polish or Russian dessert, it has definitely spread its way through the world and has become a rather well known and popular treat. Babka is often also referred to as a Jewish dessert, stating that Jewish housewives used leftover challah and braided it together with jam, nuts and seeds.

A babka is typically made from a doubled and twisted length of sweet yeast dough and is typically baked in a high loaf pan. Instead of a fruit filling the dough contains cinnamon and/or chocolate. The babka is usually topped with streusel.

Much more information, with tips and a great recipe for Chocolate Babka with Mixed Nuts is kindly provided at the jenreviews site (second link below).