Combine the blended Scotch, lemon juice, and syrups into shaker. Fill with ice and shake vigorously until drink is sufficiently chilled to and diluted. Strain into chilled rocks glass filled with ice. Float Islay Scotch on top and garnish with the candied ginger.
Equal parts (by volume) fresh ginger juice and superfine sugar (i.e. 1/2 cup ginger juice and 1/2 cup sugar). Stir in sugar until fully dissolved.