This recipe is from Melissa Clark's new cookbook, "In the Kitchen With A Good Appetite." Don't make the potato batter ahead (not even grating the potatoes). It's better to fry the latkes ahead and keep them warm in a 200 F oven than to have the batter sit and turn brown while it waits. ave everything measured out before your guests arrive, then grate, mix and fry all at once. Makes 16 to 20 latkes. NOTE: This recipe can easily be doubled, tripled...