01 - Wash and dry the lemons thoroughly. Using a microplane or fine grater, zest the lemons, avoiding the bitter white pith.
02 - In a medium bowl, combine the sugar and lemon zest.
03 - Use your fingers to rub the zest into the sugar until the mixture is fragrant and the zest is evenly distributed.
04 - Transfer the lemon sugar to an airtight container. Use immediately, or store for up to 2 weeks at room temperature.