Soak gelatin in cold water for 10 minutes.
Combine water and low-calorie sweetener in a saucepan and bring to a boil.
Add the soaked gelatin and let it dissolve completely.
Place egg whites in a mixing bowl and whisk until stiff peaks form.
Slowly add the dissolved gelatin mixture to the egg whites while whisking.
Pour the mixture into a mold and smooth it out evenly.
Refrigerate for at least 3 hours until set.
Cut into bite-sized pieces and coat with dextrin powder or coconut flour.