Fill two glasses with ice and garnish. Divide vodka and simple syrup between them and top with soda water.
Citron Sencha Simple Syrup: In an Multipurpose Pot - 8 C, whisk together 2 C (500 ml) sugar, 1 C (250 ml) water, and 2 Tbsp (30 ml) Citron Sencha Green Tea leaves. Cook over medium heat until reduced by about half. Strain and keep in fridge for up to 10 days.
Tip: Use an (p.1004216) to make thin, pretty slices of cucumber to infuse fresh flavour in your cocktail.