Place the strawberries in a blender, or food processor, and blend until smooth. Add ¾ cup of sugar and blend again until the sugar is dissolved. Add the Grand Marnier and process until incorporated. Check the taste and add up to ¼ cup more sugar if needed. The sorbet should taste just a little more sweet than you would think.
Place a large fine mesh sieve over a large bowl and strain the puree, pressing the pulp with a rubber spatula as needed to drain. Discard the seeds.
Cover and refrigerate the sorbet mixture for several hours or overnight. Process the sorbet in your ice cream maker according to the manufacturer’s instructions. Store the processed sorbet in an airtight container and freeze for several hours before serving.
Notes
If counting WW points, use no more than ¾ cup sugar in the recipe.
Tools you will need to make the sorbet: a large fine mesh sieve, a food processor or blender, and an ice cream maker. This recipe has not been tested without freezing in an ice cream maker. If you do not have one, I'm sure the taste will still be terrific while the texture may not be as light.
Substitute 2 teaspoons fresh lemon juice (more or less to taste) for the Grand Marnier, if desired.