The paczki is a Polish doughnut. In other words, it is fried dough filled with fruit preservatives or sweet cream and topped with powdered sugar or glaze. Historically, Fat Tuesday was an opportunity for Polish Catholics to eat all the sugar, eggs and lard in their house before Lent. Hamtramck’s many Polish bakeries offer a large variety of paczkis. The Paczki Run is a 5K run through Hamtramck on the Saturday before Paczki Day. The event is aimed at helping people make room for those paczki.