The other day I went to a TooJay’s deli … ordered a Ruben and when it came out, instead of layers, the contents were literally rolled up and put between the bread. I realized the ‘layer-age’ is an important element to a sandwich (If I ordered a chessebuger w/ lettuce, tomato, onion, etc. I wonder if they’d have rolled that too? Of course not!)
It reminded me of the condiments on top or under the hot dog discussions.