⅓ cup sugar
2 cups Japanese whisky (suchas Nikka or Suntory)
1 cup fresh lemon juice
1 x 340g can club soda
lemon twists, to serve (optional)
Combine sugar and ⅓ cup water in a jar. Cover; shake until sugar dissolves.
Combine with whisky, lemon juice, and club soda
in a large pitcher. Add 8 cups ice; stir until ice begins to melt, about 1 minute.
Serve over ice, garnished with lemon twists, if desired.