Homemade Lemonade Wash lemons and peel off all the zest using a vegetable peeler. Set peeled lemons aside. Add the lemon zest to a bowl and cover with sugar: 60 mL sugar per lemon's worth of zest. Toss to combine. Cover and let sit for a minimum of two hours, or up to overnight. Some sugar will dissolve, producing lemon essential oil, which enhances the taste. Bring water to a boil in a pot over high heat; turn off heat and pour in the lemon-sugar mixture. Stir and let sit until the sugar is completely dissolved, about 5 minutes. Alternately you can boil water in a kettle and pour over the lemon-sugar mixture if the mixture's container is large enough. Pour through a mesh strainer back into the same bowl and discard the zest. Let cool to room temperature. Cut the lemons and squeeze into the bowl. I cut the lemons into quarters, then use a citrus squeezer to extract maximum juice. Pour lemonade into a serving pitcher. Wrap in plastic wrap and chill thoroughly before serving over ice, at least 2 hours.