1. 1. Fill a wine glass with ice cubes to chill the glass.

2. 2. In a cocktail shaker or separate glass, combine 15 ml (1/2 oz) rhubarb syrup and 7.5 ml (1/4 oz) fresh lemon juice. Stir to mix.

3. 3. Strain the rhubarb-lemon mixture into the ice-filled wine glass.

4. 4. Top up the glass with 120 ml (4 oz) chilled sparkling wine.

5. 5. Gently stir once or twice with a spoon to combine.

6. 6. For garnish, carefully slice fresh rhubarb into thin strips using a sharp knife and slide them into the glass, or add a small sprig of fresh mint.

7. 7. Serve immediately and enjoy responsibly.