On September 25, Daniel Boulud and the sommeliers from each of his New York restaurants will share their favorite wines with 40 guests. Now in its third year, the Detour de France event (from $350 per person) features each sommelier’s favorite classic French-style wine followed by a blind tasting of a second wine, from a different terroir, whose selection was inspired by the first. For instance, a white Burgundy might be followed by a Chardonnay from a different region of France. The tasting will be held over …