Originally Posted by Non-NonRev

The sandwich you made sounds delicious.

It simply isn't "authentic".

Authentic must be super thin but high-quality ribeye chopped on the grill with the edge of the spatula. Onions, if wanted, grilled on the side. Put meat into roll, top with optional onions, then pour hot Whizz on top. Serve.

Any variation is certainly acceptable, it just removes the imprimatur of "authentic".