Currywurst ist one of the most popular German street foods. The birth of the currywurst took place only a few years after the second World War. According to the "Welt der Wunder", the snack stand owner Herta Heuwer reported that it was a rainy day when she mixed the first curry sauce on September 4th, 1949, clearly out of boredom. She wanted to spice up her post war meal, so she traded some German alcoholic beverages to the English for some curry powder. The ingredients were reputed to be peppers, ground pepper, tomato puree, and different spices – she then poured the signature creation over a boiled and cut into pieces sausage. The combination of chili and ketchup was patented as “Chillup” shortly thereafter.You can find the recipe here: https://alltastesgerman.com/curry-sausage/