Place all the ingredients into a medium saucepan set over a medium heat. Bring the mixture to a boil and then reduce the heat to maintain a simmer. Allow to simmer until the sauce has thickened and berries are falling apart, about 30 to 35 minutes.
Cool completely, then cover and place in the fridge for at least 2 hours.
Before churning remove the orange peel.
Assemble the paddle holder of the of Dessert Maker with the fresh fruit paddle. Place in the freezer bowl and turn the unit on. While the unit is running, pour the mixture into the frozen bowl. Allow to churn until thickened, about 20 minutes. The sorbet will have a soft texture. If a firmer consistency is desired, transfer the sorbet to an airtight container and place in the freezer for about 2 hours.