Make the Blueberry Puree:

In a blender, combine the fresh blueberries, sugar, and lemon juice.

Blend until smooth. If the puree is too thick, you can strain it through a fine mesh sieve or add a little water to thin it out.

Prepare the Cocktails:

Spoon about 2 tablespoons of the blueberry puree into each champagne flute.

Slowly pour chilled Prosecco over the puree, allowing it to mix naturally. You can stir gently if needed to blend the flavors.

Garnish and Serve:

Garnish with a few fresh blueberries and a sprig of mint on top.

Serve immediately and enjoy the refreshing taste of your Blueberry Bellini.