Add the peach nectar and triple sec to a champagne flute.
Slowly, pour in prosecco. Allow the bubbles to dissipate and add more prosecco if needed.
Notes
Peach purée: Use a food processor or blender to blend the peaches until a smooth purée forms, with no lumps.Orange liqueur: Orange liqueur, such as triple sec, is optional but recommended. If you skip it, replace it with 1 ounce of peach nectar/purée.Pouring tip: Pour the peach juice and triple sec first, then top with prosecco.Virgin bellini: Instead of prosecco, use ginger ale, sparkling lemonade or spakling cider. Party planning: For a party, you will need approximately 1 bottle of prosecco for 3 people. See post for tips on purchasing prosecco for mimosas at a party.