Following Repeal of Prohibition, Beaulieu hired Andre Tchelistcheff from France as winemaker and the quality of its wines increased significantly. Tchelistcheff also became a mentor to other important winemakers such as Mike Grgich (whose Chateau Montelena Chardonnay won the Judgment of Paris), Joe Heitz of Heitz Wine Cellars, and Robert Mondavi. By the 1940s, Beaulieu wines were served at all major White House functions.