In this episode, Joanna Simon introduces Alsace Grands Crus wines, which are made from carefully selected, high quality grapes grown within one of Alsace's 51 specially designated AOC (Appellation d'Origine Contrôlée) Grands Crus vineyards. She enlists the help of Melanie Pfister from Domaine Pfister and Catherine Faller from Domaine Weinbach to explain the complexity of these wines, and how the diversity of Alsace's terroirs makes them so special.