A doughnut, or donut, is a type of fried dough confectionery or dessert food. Cider doughnuts are a cake doughnut with apple cider in the batter. National Doughnut Day celebrates the doughnut's history and role in popular culture. Mister Donut is one of the most popular doughnut chains in Japan. Others have racks offering fresh delivered or baked doughnuts from local doughnut shops. Homer goes to Lard Lad Donuts to get a "colossal doughnut". The hot doughnut is then rolled in granulated sugar. Sel roti () is a traditional homemade, sweet, ring-shaped rice bread/doughnut originating from [Nepal]. Beignets were declared the official state doughnut of Louisiana in 1986. The dutchie is a Canadian doughnut popularized by the Tim Hortons chain. In theory, a nanotorus is a carbon nanotube bent into a torus (doughnut shape). A doughnut, or torus, has 1 such hole. In Slovenia, a jam-filled doughnut known as "krofi", is very popular. This design is based on a toroid (the same shape as a doughnut). But the circle is not homeomorphic to the doughnut.