The hot dog’s origins are commonly traced to German-speaking immigrants in the United States, who brought sausage-making traditions in the 19th century. Sources describe how German varieties such as weisswurst, bockwurst and blutwurst influenced what later becomes known as the hot dog. Over time, these sausages are said to have been adapted for American tastes and eating habits, including being served in a bun in ways associated with street food. One outlet frames this evolution as part of a broader story of immigration and cultural blending, while another places emphasis on the German roots of an American icon. Together, the accounts portray the hot dog as an example of how immigrant food practices can shift form and name as they enter local markets. Although the specific steps and timelines are not detailed in the provided excerpts, all sources agree on the central point: German sausages from immigrant communities are the foundation for the hot dog as it develops in the United States, gaining popularity as a widely recognized American food.