The Mauboussin Mega Sundae from the Bagatelle restaurant costs $1,000. The sundae is made with vanilla ice cream, whipped cream, chocolate truffles, French macaroons, special sorbet, gold leaves, dark chocolate brownies and chocolate vodka sauce. The brownies are covered in 24-karat gold, and the special sorbet is created from Dom Perignon rose champagne. The sundae is served in a large martini glass and comes with a unique gift for you to keep. If you finish the entire dessert, then you get a $590 Mauboussin ring made with white gold, black steel and diamonds that comes in a black box. Mauboussin is a famous French company that has been selling jewelry since 1827.