Koskenkorva's rhubarb liqueur, prosecco, and a splash of mineral water. Garnish with an orange slice, or maybe a rhubarb stalk if it's in season.
4 cl Koskenkorva Rhubarb
4 cl Dry Prosecco
4 cl sparkling mineral water
Fill glass with ice and pour ingredients on top.
Stir, garnish, and serve.