I have been driving past Arby's for years ignoring their roast beef
sandwiches. Until recently, I saw a commercial for their roast beef
sliders with a side cup of "aujus". This stuff looks like black coffee
but when you dunk that roast beef sandwich in it...oh my, it's
wonderful.

I assume this delicious sauce is made with the drippings from cooking
the roast beef. Anybody have experience making this wonderful sauce
for eating roast beef?

William