Add pear nectar, elderflower liqueur, vodka, and lemon juice to the shaker.
Shake vigorously for 15-20 seconds until well chilled.
Fill two Collins glasses with fresh ice cubes.
Strain the mixture evenly between the glasses.
Top each glass with club soda (about 2-3 oz per glass).
Stir gently with a bar spoon to combine.
Garnish each glass with a pear slice and mint sprig.
Notes
Store pear nectar in the fridge after opening - it stays fresh for 5-7 days.Skip the vodka and add extra club soda for a non-alcoholic version.The drink tastes best when served right away while cold and bubbly.Fresh lemon juice works better than bottled - it adds brightness to the cocktail.