Labouchere sauce

Does anyone know the recipe for Copeland’s Labouchere sauce?

No Susan, I do not know this recipe, but this is the first time I have logged onto this website and this is the very recipe I too am searching for. Please let me know if you have found this sauce recipe.
Thanks,
Flo

I am looking for the Labouchere sauce from Copelands, anyone know what’s in it?