Frozen Orange Spritz

Steps

1. Stir 30 g caster or granulated sugar2½ tbsp caster or granulated sugar2½ tbsp granulated sugar45 g caster or granulated sugar55 ml caster or granulated sugar3½ tbsp granulated sugar and 1 tsp finely grated orange zest1 tsp finely grated orange zest1 tsp finely grated orange zest1½ tsp finely grated orange zest1½ tsp finely grated orange zest1½ tsp finely grated orange zest into 220 ml orange juice220 ml orange juice¾ cup + 3 tbsp orange juice330 ml orange juice330 ml orange juice1⅓ cups orange juice and 50 ml water50 ml water3½ tbsp water75 ml water75 ml water⅓ cup water for about 1 minute, until the sugar dissolves.
2. Pour the base into an empty tubpint. It stays well below the max fill line, which leaves room for what you add before spinning. Put the lid on and freeze on a level shelf for 24 hours.
3. Pour 90 ml prosecco90 ml prosecco¼ cup + 2 tbsp prosecco135 ml prosecco140 ml prosecco½ cup + 1 tbsp prosecco into a wide bowl and whisk for 2–3 minutes, until it stops fizzing, so it cannot foam over in the machine.
4. Dig a hole about 4 cm1½ in wide down to the bottom of the frozen tubpint. Pour in 60 ml bitter orange aperitif60 ml bitter orange aperitif¼ cup bitter orange aperitif90 ml bitter orange aperitif90 ml bitter orange aperitif¼ cup + 2 tbsp bitter orange aperitif and 90 ml prosecco90 ml prosecco¼ cup + 2 tbsp prosecco135 ml prosecco140 ml prosecco½ cup + 1 tbsp prosecco, then lock it into the machine and run Frozen Drink.

To serve: Serve in large wine glasses with an orange slice and a green olive on a pick.