Then Keep it aside and let it cool down. In a separate glass add half a glass of water, and to it add 1 teaspoon of freshly squeezed lemon juice. Stir it and now add the cooled syrup to it. You can transfer the entire juice to another jug. Your ginger lemon juice is ready. You can add more ice if you need. Adding a pinch of salt to it gives it that extra flavor.