Sustainable Winegrowing With Vineyard Team

High temperatures and extreme weather events can have numerous impacts on wine grapes and ultimately wine quality. Dr. Andreea Botezatu, Associate Professor and Extension Enology Specialist at Texas A&M University, Texas AgriLife Extension Service finds that changes in ripening patterns are the most common. In high heat, sugars accumulate faster, acids degrade, ripening happens earlier and the result is higher alcohol wines. The challenge is that ripening is not linear. Tannins and maturation of the seeds do not progress at the same pace. Plus, high pH causes color and flavor instability. Andreea is experimenting with verjus, the juice of green grapes. In North America, grapes from crop thinning are traditionally considered waste. However, in Eastern Europe and the Middle East, green grape juice is used in many culinary practices. Verjus has little sugar, high acidity, and low pH making it a perfect addition to unbalanced wines. Learn about her current experiment testing both red and white grape verjus ag