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Sam is a trusted home cook.
Okay...this isn't quite 'foodie' stuff.
Supermarket: get a crusty baguette or Italian loaf of bread.
And then get deli sliced (very thin, shaved) Boars Head "London Port" roast beef.
And then a packet of 'au jus' mix.
Make all the above and serve the sandwich with the au jus in a bowl...sides: Deli potato salad, cole slaw, and dill pickle. (swiss chees is VERY optional on the sandwich).