01 - Squeeze all lemons thoroughly to obtain fresh juice, removing any seeds that fall through.
02 - In a large pitcher, combine lemon juice with sugar and stir continuously until completely dissolved.
03 - Pour cold water into the pitcher and mix well to incorporate all ingredients evenly.
04 - Add ice cubes to the mixture, taste, and adjust sweetness or water concentration if needed.
05 - Distribute into glasses and decorate with lemon slices and fresh mint leaves if desired.