An curved arrow pointing right. The World Health Organization says there is evidence that hot dogs and other processed meats can cause cancer. This made us wonder — exactly what is inside a hot dog?

Not everyone agrees on the best way to eat a hot dog. As an acolyte of the Chicago school, I like mine dressed in a skimpy squirt of yellow mustard. Others will slather their wieners with ketchup.

A retailer of brushes, brooms, dustpans and cleaning products has acquired a large site in North Yorkshire, which was previously home to a manufacturer of a well-known hot dog brand, for a new ...