Most casual wine drinkers are aware of only a few grape varietals such as cabernet, merlot, chardonnay, pinot noir, malbec and shiraz. Others may have tried a riesling, pinot gris or petite sirah. But there are literally hundreds more varietals that have been made into wines that are stylistically different and extremely enjoyable. All it takes is a willingness to explore the shelves of a well-stocked store and a sense of adventure.