Add everything to a chilled rocks glass, then fill with pebble ice. Swizzle, then top with more pebble ice. Garnish with 3 dashes Peychaud's Bitters and a mint sprig.
Stanislav Vadrna introduced this cocktail, named after Nikka Whisky founder Masataka Taketsuru, at an event during Paris Whisky Live in September 2009. —Stanislav Vadrna, Bratislava, 2009