Grab 5 lemons and a microplane grater. Shave your lemon peels into a small bowl. Add in 1/3 cup of crushed or cracked black pepper and 1/4 cup coarse salt. Stir together then spread it all out on a parchment paper-lined baking sheet. Bake on the lowest setting until completely dry. This should be around 30-45 minutes. Add this mix to a spice grinder and grind to a consistent texture. Store in an air-tight container.