This lemon posset only needs three ingredients, and is a low carb twist on the classic English dessert. Sugar free, LCHF, and keto recipe.

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A "posset" is an English cream dessert, that actually dates back to medieval times, when it was more of a warming drink. It's quite similar to a syllabub, and the simple lemon version requires just three ingredients: cream, sugar, and lemon juice.
My version replaces the sugar with sweetener, of course (Lakanto or granular Swerve would work well), and I have also used a mixture of lemon zest and juice, to get that amazing fresh flavor without increasing the carb count (there are about 3-4g net carbs in the juice of one lemon - which isn't too bad, but does start to add up).
This might seem like a summery dessert for trying in January - but I assure you that this creamy, tangy dessert works at any time of the year!
How to Make a Low Carb Lemon Posset
Mix the cream and sweetener together in a saucepan, and bring slowly to a boil, stirring frequently. Let it boil for about three minutes before removing from the heat. Meanwhile, zest a whole lemon (a Microplane zester makes this task easy!), and then juice it.
Reserve a small amount of the zest for garnish, then add the remaining zest and juice to the cream. Stir well, and the mixture will start to thicken.
Leave to cool for five minutes, stirring occasionally, then transfer to serving glasses or dishes. Let it cool completely, then cover and store in the fridge until required. To serve, sprinkle the lemon zest over each lemon posset.
📖 Recipe

Low Carb Lemon Posset
Ingredients
Equipment
Step-by-Step Instructions
- Mix the cream and sweetener together in a saucepan, and bring slowly to a boil, stirring frequently. Let it boil for about three minutes before removing from the heat.
- Reserve a small amount of the zest for garnish, then add the remaining zest and juice to the cream. Stir well, and the mixture will start to thicken.
- Leave to cool for five minutes, stirring occasionally, then transfer to serving glasses or dishes. Let it cool completely, then cover and store in the fridge until required.
- To serve, sprinkle the lemon zest over each lemon posset.
Nutrition
Notes
Tried this recipe?
Let us know how it was!Nutritional information is provided as a courtesy and is my best approximation. Net carbs are calculated as the total grams carbs minus the total grams of fiber.




Tracee says
It says 7 carbs per serving, but only lists 1 carb sugars and 1 carb fibre, where are the other 5 carbs please?
Georgina says
Apologies for the delay in replying. The nutritional data was inaccurate, I have now corrected it. Thanks!
Lar says
I used granular Lakanto monkfruit/erythritol and it recrystallized into a layer on the posset top. What sweetener can I use that won't crystallize?