Invented in the British zone of Berlin in the aftermath of WW2. A german housewife traded some alcohol to some British troops for curry powder, ketchup and worcestershire sauce. Mixing these into a sauce, she served it atop pork sausages and sold them on the streets of Berlin, and made a good living. Sadly, she took the recipe to the grave, and it had to be reverse engineered. My own formula uses kielbasa, and I mix Ketchup, curry powder, garlic, paprika and onion powder, and worcestershire when I have it, and microwave it for no more than 45 seconds. fry your sausage up and pour sauce over it. I like mine on a bun.