Add the lemon wedges and sugar to a 32-ounce container. Muddle the lemons and sugar together until the lemons soften.
Pour in the water, mango syrup, and fill almost to the top with ice.
Place the cover on and shake the lemonade until well combined. Using a paring knife, cut an X into the top of the lid and insert a straw.
Notes
• Wash the lemon before cutting it into wedges to remove any wax or residue.• Muddling the lemon with the sugar helps release both the juice and the flavorful oils from the peel.• No need to roll the lemon beforehand. The muddling process does all the work for you.• For a more tart lemonade, add extra lemon juice or reduce the sugar slightly.• Store without ice if making ahead so the lemonade doesn't become diluted.• Fresh mango can be used instead of syrup, but the flavor will be more like homemade mango lemonade than the classic state fair version.• Sparkling water can be substituted for regular water if you want a fizzy version.• Give the container a good shake before serving if it has been sitting for a while.