Lemon Sky

Brian and Jackie vacationed along the Amalfi coast in Italy some years ago, and they still remember sipping ice-cold limoncello at every sidewalk café and restaurant. Limoncello is a lemon liqueur that captures the bright, sweet, velvety tang of fresh lemons. Here we pair it with ginger puree for a light, billowy cloud of lemon-ginger sorbet. But because it’s a water-based sorbet, there’s no milk fat to hold the spinning air and give it body. We add egg whites for this reason (think of whip