ロバート・パーカー
The decline has been attributed, in part, to Grolleau's reputation for poor quality as noted by wine experts such as Jancis Robinson and Tom Stevenson. Wine critic Robert M. Parker, Jr., has taken a dim view of Grolleau's potential, recommending in his wine buying guide that growers in the Loire Valley should rip up all Grolleau vines and replace them with grape varieties that have more potential for quality wine production such as Gamay and Cabernet Franc.