Step 1

In a large bowl, whisk together the lime juice, lime zest, sugar and salt, mixing until the sugar and salt are dissolved. Then, whisk in the heavy cream, mixing until everything is well-combined. Refrigerate mixture until chilled, which takes about an hour.

Step 2

Fill the cylinder of an ice cream maker no more than two-thirds full, then process according to the manufacturer’s directions. Transfer the sherbet to freezer containers, allowing headspace for expansion. Freeze the lime sherbet until it's good and firm, which will take about eight hours (or overnight).