As requested, I shall supply a video of the Scandinavian sandwich deathgrip, which allows one to retain full range of motion while handling a sandwich with no top.
This stars the hand of a real live Finn. A real live Finnish hand.
Take note of the Scandinavian sandwich: Only one piece of bread, with things on top; except this one has no things on top, because even the Scandinavian sandwich deathgrip's full range of motion cannot prevent toppings from toppling.