On the recommendation of the guys at Cherries and Clay, who've made it one of their New Years resolutions to stage a Battle Royale between Rieslings from BC's Tantalus and Ontario's Cave Springs plus a few others, I tried the Cave Springs 2008 Riesling, VQA Beamsville Bench, from the Niagara peninsula.  Very, very, tasty.  Quite crisp, tannic, flavorful, with plenty of appley fruit and minerality, especially a certain slightly spicy dirt kind of thing that I associate with Niagara, and also noticed in the Clos Jordanne Pinot Noirs and Chardonnays (both wineries are located in Jordan, and Beamsville Bench is in the area), along with some chalkiness.  11.5% alchohol.  This struck me as a rather Alsatian Riesling.  Some sweetness, but basically dry and quite snappy and high in acid compared to, say, my memory of California Rieslings (from the 1980s though).  Though not cheap for a North American Riesling, this gets the thumbs-up for multiple-bottle buys.  Very distinctive, loads of Niagara Peninsula escarpment terroir, and just plain tasty.  Should probably age fine for a few years, maybe longer, but it's definitely delicious now.  Make yourself a choucroute garni, if you're up for it.  (I had it with broiled salmon, which was fine, but not really an outstanding wine-food pairing.)  Thanks for the recommendation, Kurtis and Jake at C&C.   (They also link to some videos about Cave Springs, here.)