Make the sorbet mixture (see instructions above).
Put the bowl with the sorbet mixture over an ice bath to chill, be careful not to get water into the mixture.
Meanwhile, freeze an empty freezer-safe shallow bowl or pan (stainless steel works well). This should take about 45 minutes.
Move the chilled sorbet mixture into the frozen bowl or pan.
Freeze for about 45 minutes and check the sorbet.
As the edges start to freeze, stir the mixture with a whisk or spatula.
Return to the freezer.
Stir sorbet vigorously every 45 minutes until it is firmly frozen.
You may need to repeat 4 or 5 times until sorbet is firmly set.