BANGKOK--Despite its winemaking industry being less than two decades old, Thailand produces not only top-quality blends but also oenological talent enough to nourish future generations of connoisseurs and viticulturists.GranMonte Vineyards and Winery's harvest festival two weekends ago showed day-trippers and budding wine-lovers that it can produce award-winning vintages using homegrown expertise, even amid the mostly foreign winemakers in our industry here.