Concha

Concha , plural conchas, is a traditional Mexican sweet bread roll (pan dulce) with similar consistency to a brioche. Conchas get their name from their round shape and their striped, seashell-like appearance. A concha consists of two parts, a sweetened bread roll, and a crunchy topping (composed of flour, butter, and sugar); With the most common crunchy topping flavors being chocolate, vanilla, and strawberry. Conchas are commonly found throughout Mexico (and its diaspora) in panaderias. They can now also be found in grocery stores and bakeries across the United States. The exact origin of the concha is unknown. Many believe that it dates back to the colonial period, and was introduced by French bakers who settled in Mexico. It is also believed that the idea came from a nobleman that dipped a piece of bread into some hot chocolate in front of many people and told them they should do it too.

Source: Wikipedia