Easy D.
SHAKE first 4 ingredients with ice and fine strain into chilled glass. TOP with sparkling solution.

Special ingredient #1: 30ml 5% salted sparkling malic acid solution (dissolve 3 flakes of maldon salt and 2.5g of malic acid powder in 50ml of ice cold sparkling water)
[['4.5 cl', 'Caorunn Gin'], ['0.5 cl', 'Islay single malt (peated) Scotch whisky'], ['2 cl', 'Riesling wine'], ['1 cl', 'Giffard Orgeat Syrup'], ['3 cl', '*Special ingredient #1 (see above)']]
[['4.5 cl', 'gin'], ['0.5 cl', 'scotch whisky'], ['2 cl', 'riesling wine'], ['1 cl', 'giffard orgeat syrup'], ['3 cl', '*special ingredient #1']]