Or remove citrus peels with a vegetable peeler, finely slice them, and simmer them in sugar syrup made from one cup water and one cup sugar. Let it cook for fifteen minutes, with a small plate holding the peels down, until the liquid has thickened. Keep the citrus syrup in your refrigerator, and let it warm up before mixing it into tall glasses of cold seltzer and ice to make homemade sodas. Garnish them with fresh mint.