Hotteok is a popular Korean street food eaten during the winter months. The yeasted dough is filled with sugar, cinnamon and nuts, flattened and cooked until crisp. Sujeonggwa is a traditional, cold fruit punch scented with ginger, cinnamon and persimmon.Hotteok is a popular Korean street food eaten during the winter months. The yeasted dough is filled with sugar, cinnamon and nuts, flattened and cooked until crisp. Sujeonggwa is a traditional, cold fruit punch scented with ginger, cinnamon and persimmon.