Who says meat and potatoes can't happen between two slices of bread? And so it is that thin slices of roast beef rest between peppery arugula and crisp, tangy salt-and-vinegar potato chips. In place of Gruyere, cheddar could be swapped in.
A ripe mango is firm with some give. Before slicing, peel with a vegetable peeler or paring knife. Place peeled mango on its narrow side and, using a sharp knife, cut to each side of the pit, slicing off as much flesh as possible. Reserve the pit for its juice. Slice the mango crosswise, not lengthwise.