Fill the highball glass to the top with ice cubes
Place 0.3 oz of cardamom and 0.3 oz of vodka into the shaker and muddle
Strain the cardamom vodka into the highball through the strainer and sieve
Pour 1.25 oz of lemon juice, 1 oz of simple syrup, and 1.5 oz of London dry gin into the glass
Fill to the top with ginger beer and stir with a bar spoon
Garnish the cocktail with a slice of cucumber and cinnamon sticks