Never add ice to your pitcher. Chill the lemonade without ice and then pour over ice just before serving. I like to have a bowl or bucket of ice next to the pitcher of lemonade so everyone can serve themselves. If you want a really pure lemonade flavor that never fades, freeze some of your lemonade in ice cube trays and use that for your ice. Your lemonade will stay fresh and vibrant. Another tip: add some lemon slices to your pitcher of lemonade and extra lemon flavor will infuse slowly over time.