Make the Cocktail:

In a blender or food processor, puree the pitted apricots until smooth.

In a cocktail shaker, combine the apricot puree, bourbon, lime juice, simple syrup, and elderflower liqueur.

Fill the shaker with ice, cover, and shake vigorously until well chilled.

Assemble the Drink:

Strain the cocktail mixture into the prepared glass, filling it about halfway or three-quarters full.

Top off the drink with sparkling wine or club soda for a refreshing fizz.

Gently stir to incorporate.

Garnish and Serve:

Optionally, garnish with a slice of lime or a few apricot slices.

Serve immediately and enjoy the fresh, fruity burst of spring in your delightful bourbon fizz.