ALBAWABA - A Spanish restaurant, Asador Aupa, located in Cabrera de Mar in Catalonia, has unveiled what is believed to be the most expensive burger in the world, priced at $11,000 (around €9,450). The restaurant, renowned for its luxurious Basque-style cuisine, said the exclusive creation is the result of eight years of research and experimentation by its chefs, according to Oddity Central . Unlike other luxury dishes that rely on ...