Wine Drinker explains how a new study suggests that moderate water stress can enhance wine character by increasing compounds linked to flavour, aroma and antioxidants, but severe drought may push some grapes beyond their limits. Chardonnay appears relatively adaptable, responding gradually to increasing stress and even boosting protective compounds such as glutathione. Pinot Noir seems more vulnerable, with some aroma-related metabolites declining once water stress becomes severe, suggesting a narrower climatic comfort zone. Crucially, irrigation and vineyard management can greatly alter how much stress vines actually experience, meaning producer decisions may become as important as regional climate in shaping future wine styles.