Cut the passionfruit in half and scoop the seeds into a fine sieve set over a bowl. Using the back of a teaspoon, press the pulp through. Discard the seeds
Put the passionfruit juice, brandy, sugar and peach in the Vitamix machine and secure the 2-part lid
Select variable speed 1. Turn the machine on and slowly increase the speed to 6. Run for 10 seconds or until smooth, using the tamper to push the fruit into the blades if necessary. Turn the machine off
Add the champagne. Select variable speed 2 and run the machine for 2 - 3 seconds. Pour into cocktail glasses, decorate each one with 1 slice of peach and serve