Pompano en papillote is an American dish hailing from New Orleans, where it was invented by Jules Alciatore at the famous Antoine's restaurant in honor of Brazilian balloonist Alberto Santos-Dumont. The dish is made using a French baking method in parchment paper called en papillote, hence the name of the dish.
It's made with a combination of pompano fillets that are baked in parchment paper with a sauce consisting of white wine, shrimp, and crabmeat. Once packed, the dish is baked in a hot oven, and the steam will puff the paper up, so it will look similar to a balloon.