1 (5 centimeter) piece of fresh ginger, thinly sliced
60 milliliters (2 ounces) pomegranate and ginger syrup
30 milliliters (1 ounce) vodka
2 dashes aromatic bitters
Handful of ice cubes, more for serving
30 milliliters (1 ounce) soda water
Pomegranate arils, for garnish
Make the pomegranate and ginger syrup. Combine the pomegranate juice, sugar, lime juice, and ginger in a small pot and bring to a boil. Reduce the heat and simmer for five to eight minutes, until the liquid begins to thicken slightly, periodically pressing the ginger with the back of a spoon to help bring out its flavour.
Remove the pot from the heat and let cool for 30 minutes. Strain the syrup through a fine-mesh sieve into an airtight container. The syrup will keep in the refrigerator for up to two weeks.
Make the cocktail. Add the syrup, vodka and bitters to a cocktail shaker. Add the ice and shake for 10 to 15 seconds.
Strain the cocktail into a highball glass filled with fresh ice cubes. Top with soda water and garnish with pomegranate arils.