Wash the peaches under cool water, slice into wedges, discard the pit. Roll the lemons to maximize juice extraction, then cut in half and squeeze to obtain about 1/2 cup of lemon juice.

In a blender, combine peach wedges, lemon juice, and sugar. Blend on high until smooth, about 30-45 seconds.

Strain the blended mixture through a fine mesh strainer over a large pitcher to remove pulp and skins.

Add 4 cups of chilled filtered water to the pitcher with the strained mixture and stir gently to combine.

Pour the lemonade into glasses filled with ice and garnish with lemon slices or fresh mint leaves.