The 2015 Bonnes-Mares Grand Cru from Louis Jadot is one of the most firmly shut down wines in the portfolio, but its potential is superb, unfurling in the glass with notes of wild berries, creamy cherry, rose hip and currant leaf. On the palate, the wine is full-bodied, deep and concentrated, with outstanding purity and energy, but dominated for the time being by its ample chassis of chalky, fine-grained tannins which will take a decade or more to melt away. The rewards of patience will be considerable.