Lemon syrup is a bright, citrus-forward infusion made by simmering fresh lemon zest and juice with sugar and water until it clarifies into a zesty, translucent sweetener. Thanks to the high concentration of essential oils in the peel and the natural citric acid of the fruit, it delivers sharp, tangy, and bracingly clean notes—often balanced with a pinch of sea salt to enhance the citrus profile—making hot teas, club sodas, and classic cocktails taste punchier, more effervescent, and more "citrus-fresh" than regular simple syrup.