Step 1

Use a rasp-style grater to zest the citrus.

Step 2

Process cream in blender until stiff peaks form, 30 to 45 seconds, scraping down sides of blender jar as needed. Add condensed milk, evaporated milk, corn syrup, sugar, orange zest and juice, and lemon zest and juice. Process until thoroughly combined, 30 to 45 seconds.

Step 3

Pour cream mixture into airtight 1-quart container. Cover and freeze until firm, at least 6 hours. Serve.