Place 2 strawberries, 2 raspberries, and 1 bar spoon of bilberry into a shaker and muddle
Pour in 1 oz of cranberry juice, 0.35 oz of sugar syrup, 0.35 oz of creme de cassis liqueur and 1 oz of vodka
Fill the shaker with ice cubes and shake
Finely strain into a chilled cocktail glass
Garnish with a redcurrant sprig