6 large lemons, scrubbed, thinly sliced
2 cups loosely packed mint leaves, thick stems trimmed away
1 1/4 cups sugar
1/2 cup fresh lemon juice
2 cups water
Using a potato masher, mash sliced lemon slices, mint, 1 cup of the sugar, and 1/2 cup lemon juice in a bowl until smash and juicy, about 5 minutes. Strain lemon mixture through coarse sieve set over another large bowl, pressing masher on the solids in sieve to extract some pulp and as much liquid as possible.
Mix 2 cups water and remaining 1/4 cup sugar into lemon liquid and pulp in bowl. Fill pitcher with ice and pour lemonade over ice. Let stand 5 minutes to chill. Fill tall glasses with ice and add lemonade. Serves 6