4 cups raspberries, fresh or frozen
1 cup passionfruit pulp/juice
3/4 - 1 cup sugar
3 tablespoons lime juice
Place raspberries, passionfruit, 3/4 cup sugar, and lime juice into a blender, and purée until very well blended.
Taste mixture for tartness, and add more sugar if necessary, blending well.
Strain mixture through a fine mesh sieve to remove the raspberry seeds.
Chill mixture if not already cold.
Pour mixture into an ice cream maker and freeze according to directions. Place sorbet in the freezer for 2-3 hours more to finish freezing completely.
If not using an ice cream maker, pour ingredients into a container and place in freezer for 30 minutes. Remove and stir well with a whisk.
Continue to freeze mixture, stirring well every half hour until sorbet is frozen to desired texture.