In a medium saucepan, whisk the sugar, cacao powder and sea salt until combined. Gradually whisk in the 500ml (18fl oz/2¼ cups) water. Add the tea, place over a low-medium heat and simmer for 5 minutes. Remove from the heat, cover and allow to cool and infuse.
Once cool, strain the mixture and pour into a Creami tub, disgarding the tea bags or loose tea. Cover