01 - Squeeze the lemons thoroughly to extract fresh juice, removing any seeds.
02 - In a large pitcher, combine the lemon juice with sugar. Stir continuously until sugar completely dissolves.
03 - Pour in cold water and mix well to incorporate all ingredients.
04 - Add ice cubes to the pitcher. Taste and adjust sweetness by adding more sugar or water if needed.
05 - Pour into glasses. Garnish with lemon rounds and fresh mint leaves if desired.