After hitting the American market as a digestive aid, the green-gold powder worked its way into professional kitchens by the mid-1990s, and has gained a growing following.
Behind a tinted glass panel 18-carat gold powder, laid down by a robot arm, sparkles as a laser fuses the metal into complex three-dimensional shapes, layer by layer.
The new store's powder blue and gold walls and velvet-upholstered chairs are inspired, she explained, by Marie Antoinette's theater in the Petit Trianon at Versailles.