Herta Heuwer’s patented currywurst sauce was called Chillup.
Heuwer registered the name Chillup for her sauce in January 1951, after launching the currywurst associated with her West Berlin food stand. The sauce was a tomato-based mixture seasoned with curry powder and other ingredients, served over sausage and sold as a distinctive takeaway dish.
The name is sometimes described casually as referring to a patent, but the historical record commonly identifies it as a trademark registration. That legal distinction does not change the quiz answer: Chillup is the canonical name connected with Heuwer’s sauce.
Heuwer’s claim to the sauce’s name forms part of the broader currywurst origin story. She is widely credited with inventing the Berlin version in 1949, although other cities and vendors have competing origin claims for the dish itself. Her sauce name, however, is much less ambiguous than the question of who first created currywurst.