You’d think that the 2022 U.S. wine-grape harvest ended months ago, but curiously it’s now harvest time in a small number of northern hemisphere areas with conditions that couldn’t be stranger. That’s the word out in northern Michigan, which a week ago experienced such cold weather (minus 7 degrees F on Jan. 31!) that any grapes left hanging on vines actually froze, giving winemakers a chance to make extraordinary wines. It is not a common wine, though true wine lovers can become so awestruck by it they will go to great lengths to obtain a bottle. It’s called ice wine, and it’s a specialty that entails great risks for winemakers alongside being costly to make. On occasion, a winery will lose a huge amount of money trying to make one. Ice wines may be made from almost any grape variety, from cabernet franc to riesling. The latter is especially important …