Did you know that upstate New York produces outstanding Riesling? Or that in Michigan you can find some of the best sparkling wines in the world? How about Texas's Hill Country, which yields a Tempranillo to rival Spain's finest? Today, respectable high-quality wineries have sprung up all across the country. It's not all about California anymore. In fact, chances are there is a tasting trail where you can explore lovely wines within just a day's drive-no...