01 - Squeeze all 4 lemons to obtain fresh juice, removing any seeds.
02 - In a large pitcher, combine the lemon juice with sugar. Stir thoroughly until sugar completely dissolves.
03 - Pour in the cold water and mix well to ensure even distribution.
04 - Add ice cubes to the pitcher. Taste and adjust sweetness or water ratio as needed.
05 - Pour into glasses and decorate with lemon slices and fresh mint leaves if desired.