Alphonse Mucha Flirt Biscuits Lefevre-Utile (1895) Art Nouveau vintage advertising poster. “Flirt” was one of the brands of biscuits made by Lefevre-Utile, who gave Mucha a number of commissions over the years. Mucha was a Czech Art Nouveau painter and decorative artist, known best for his distinct style. He produced many paintings, illustrations, advertisements, postcards, …