Combine sugar and lemon zest in a large mixing bowl. Rub the zest into the sugar to release the lemon oils. Add cornmeal, salt, and flour, then mix well to ensure no lumps.
Combine sugar and lemon zest in a large mixing bowl. Rub the zest into the sugar to release the lemon oils. Add cornmeal, salt, and flour, then mix well to ensure no lumps.