No-Churn Method (Easiest):
- Whip the Cream: In a large bowl using electric mixer, whip heavy cream on medium-high speed until stiff peaks form, about 3-4 minutes. The cream should hold its shape firmly when beaters are lifted. Set aside.
- Mix Egg Yolks: In a separate bowl, whisk together egg yolks, keto sweetener, vanilla extract, salt, and xanthan gum (if using) until well combined and sweetener begins dissolving. The mixture should be smooth and slightly pale.
- Fold Together: Gently fold the egg yolk mixture into whipped cream using a rubber spatula. Use broad, sweeping motions from bottom to top, rotating bowl as you fold. Mix just until combined and no streaks remain—don’t overmix or cream will deflate.
- Add Mix-Ins: If using cocoa powder, chocolate chips, nuts, or other add-ins, gently fold them in now until evenly distributed.
- Freeze: Transfer mixture to a freezer-safe container (preferably shallow and wide rather than tall and narrow). Smooth the top with spatula. Cover tightly with lid or plastic wrap pressed directly on surface.
- Initial Freeze: Freeze for 2 hours, then remove and stir vigorously with fork to break up any ice crystals forming. Return to freezer.
- Final Freeze: Freeze for additional 2-4 hours until firm but scoopable. Total freeze time is 4-6 hours.
- Serve: Let sit at room temperature for 5-10 minutes before scooping if very hard. Scoop and enjoy!