Wash and gently scrub the peaches to remove some of their fuzz. Slice the peaches in half to remove the pits, then slice each half into 1⁄2-inch wedges, adding the wedges to the wine mixture as you go. The peaches should be completely submerged in the wine mixture. If they aren’t, either move them to a smaller container or top off the mixture with a bit more wine. Cover and refrigerate at least overnight and up to two days. Stir the peaches occasionally to help the sugar dissolve. The peaches will become more flavorful as they sit. Serve about one peach per person in clear glasses topped with a bit of the chilled wine syrup and a dollop of cream, if you like.