This is possibly the most delicious thing I've ever made in my ice cream machine. It tastes like the best Creamsicle in the world--luxurious, creamy, and sweet, with powerful orange flavor and a hint of vanilla bean in the background. Fresh orange juice makes a huge difference here, so take the time to juice your own fruit. (Adapted from The New Best Recipe, via Brown Eyed Baker.) —ieatthepeach
In the bowl of a food processor, combine sugar, orange zest, vanilla seeds, and salt. Pulse until the orange zest and vanilla are completely incorporated and the sugar is damp and sandy.
Turn on the processor and open the feed tube. With the motor running, stream in the orange juice and lemon juice. Continue processing for about 1 minute, or until the sugar is completely dissolved.
Strain the sherbet mixture through a fine mesh strainer into a bowl or large measuring cup, and stir in cream and triple sec (if using). Cover the bowl with plastic wrap and refrigerate for 1-2 hours, or until the mixture is thoroughly chilled.
Once the sherbet base is chilled, freeze it in an ice cream machine according to the manufacturer's instructions. Serve immediately for a soft-serve effect, or scrape the frozen sherbet into an airtight container and freeze for 4-6 hours, or until it’s firm but scoopable.
To store the sherbet, press a piece of plastic wrap directly onto the surface, then cover the container tightly. Stored this way, the sherbet will keep for up to a month in the freezer.