Some hot dogs contain milk as an ingredient. This is often listed as "nonfat dry milk, whey, or casein" on the ingredient list.
Many hot dogs do not contain milk and are considered "milk-free". It's important to always check the ingredient list on the hot dog package to be certain.
Here are some tips for finding milk-free hot dogs:
* Read the label carefully: Look for the words "milk," "whey," "casein," and "nonfat dry milk."
* Choose brands that specifically state "milk-free" or "dairy-free."
* Contact the manufacturer: If you're unsure, you can always reach out to the manufacturer directly for clarification.
Hope this helps!