• 1 cup heavy whipping cream
  • 1/4 cup powdered erythritol (or any other keto-friendly sweetener of your choice)
  • 1 teaspoon lemon zest
  • 1/4 cup freshly squeezed lemon juice
  • 1 teaspoon gelatin powder (unflavored)
  • 2 tablespoons cold water
  • Optional: a few drops of yellow food coloring (if you want a brighter yellow color)


  1. In a medium-sized bowl, combine the cold water and gelatin powder. Let it sit for a minute to allow the gelatin to bloom.
  2. In a separate large bowl, whip the heavy cream using an electric mixer until it reaches soft peaks.
  3. Gently heat the bloomed gelatin in the microwave or on the stovetop until it’s fully dissolved and turns into a clear liquid.
  4. While still warm, add the lemon zest and stir it into the gelatin mixture.
  5. Gradually pour the gelatin mixture and lemon juice into the whipped cream while continuously mixing at low speed. Make sure it’s well combined.
  6. Add the powdered erythritol (or your chosen sweetener) to the mixture. If you want it sweeter, you can adjust the amount of sweetener according to your taste.
  7. If you desire a brighter yellow color, add a few drops of yellow food coloring and mix well.
  8. Once all the ingredients are combined, increase the mixer speed to high and whip until the mousse has a fluffy texture and forms stiff peaks.
  9. Taste the mousse and adjust the sweetness or lemon flavor if necessary.
  10. Transfer the Keto Lemon Mousse to serving dishes or individual cups.
  11. Refrigerate the mousse for at least 2-3 hours or until it sets and becomes firm.
  12. Optional: Before serving, you can garnish with some lemon slices, mint leaves, or a dollop of whipped cream.

Enjoy your creamy and tangy Keto Lemon Mousse as a delightful keto-friendly dessert!