Mexican Coffee Buns a.k.a. Rotiboy: These fluffy, buttery buns are topped with a coffee scented cookie crust, and have become wildly popular in Southeast Asia. "Rotiboy", which started in Malaysia, is perhaps the most well known brand that specializes in these buns, but since then there have been a few others. But once you know how to make the basic fluffy milk bread dough (recipe linked below), the rest is quite easy!