Remove the frozen orange juice concentrate from the freezer and let it sit at room temperature for about 5 minutes to soften.
Using an ice cream scoop or spoon, transfer the softened orange juice concentrate to the bowl of a food processor or blender.
Process on high speed for 2 to 3 minutes, stopping once or twice to scrape down the sides, until the mixture is light, fluffy, and smooth.
Serve the sorbet immediately, or transfer it to an airtight container and freeze for up to one week for a firmer texture.
Notes
Testing Note: Let concentrate soften exactly 5 minutes before blending to ensure a smooth texture.Store in an airtight container in the freezer for up to one week and never refreeze fully melted sorbet after 2 hours at room temperature.