800 mlbuttermilk100 gmcaster sugarRind of½ orange, removed with a peeler1vanilla bean, split and seeds scraped3½gelatine leaves (titanium strength), softened in cold waterTo serve:passionfruit pulp
Combine buttermilk, sugar, orange rind, vanilla bean and seeds in a saucepan and stir over medium heat until sugar dissolves, then bring to the simmer. Squeeze excess water from gelatine, add to buttermilk mixture and stir to dissolve. Strain into a jug, then divide among four 1 cup-capacity serving bowls or cups and refrigerate until firm (3-4 hours). Serve chilled topped with passionfruit pulp.