I know this may be sacrilege to some....but sometimes you just need a French Dip and don't have a lot of time. This is where quick and easy supermarkets ingredients come into play....and allows for a French Dip as good as any you'll get in a restaurant. The key to this sandwich is buying sliced rare roast beef, and Johnny's Au Jus Concentrate. This is some amazing stuff. It's found in the condiment section of the grocery store, near the marinades. I'm all for slaving away in the kitchen, but sometimes, it's just not practical. Enjoy!!!