Easy Lemon Posset: A Silky Three-Ingredient Dessert
Lemon posset is the kind of dessert that looks more elaborate than the work behind it. A little saucepan of cream and sugar becomes a smooth, spoonable lemon cream after a few hours in the refrigerator. There is no pastry to roll, no custard to temper, and no gelatin to measure. Serve it in small ceramic ramekins, add a few curls of lemon zest, and the finished dessert feels ready for a dinner party.
The flavor is clean and direct: rich cream first, then a bright lemon finish. Unlike a whipped mousse, posset is dense and silky rather than airy. It is also different from lemon curd, which usually relies on eggs and butter. Here, the combination of cream, sugar, heat, and lemon juice gives you a dessert that sets as it cools.
This version uses three essential ingredients, with lemon zest as an optional addition from the same fruit. The stovetop stage takes only a few minutes, but the chilling time matters. Make it earlier in the day or the night before, and leave it undisturbed until it is fully set.
Recipe at a glance
- Yield: 6 small servings
- Preparation: about 10 minutes
- Cooking: about 5 minutes, including a 3-minute gentle boil
- Standing: 10 minutes
- Chilling: at least 4 hours; overnight is convenient
- Equipment: saucepan, whisk, citrus juicer, fine strainer, measuring jug, 6 small ramekins
Ingredients
- 600 ml heavy cream with at least 35% fat
- 150 g granulated sugar
- 75 ml freshly squeezed lemon juice, strained
- 1 teaspoon finely grated lemon zest, optional, plus a little for serving
The ingredient row on the accompanying image highlights cream, sugar, and lemon. The lemon supplies both the juice and the optional zest. Use the written quantities when preparing the recipe; the little bowls in a picture are styling elements rather than measuring guides.
Choosing cream and lemons
Heavy cream is the ingredient to be particular about. A low-fat pouring cream or plant-based substitute can behave differently and may not produce the same set. For this recipe, choose dairy cream labeled with at least 35% fat. If the cream has separated slightly in its container, shake it gently before measuring.
Fresh lemons give the clearest flavor. Their size and juiciness vary, so measure the juice instead of assuming that a fixed number of lemons will be enough. Two large lemons may supply what you need, but have another available. Strain out seeds and large pieces of pulp for a smoother finish.
If you use zest, wash and dry the lemon first. Grate only the yellow surface, turning the fruit as you go. The white pith underneath can introduce bitterness. A fine grater distributes the zest more evenly than thick strips, which are better reserved for a removable infusion or decoration.
How to make lemon posset
1. Prepare the serving dishes
Arrange six small ramekins on a tray that fits in your refrigerator. Choose dishes that hold roughly 120–150 ml so there is a little room above the dessert. Posset is rich, and small servings suit its texture better than large bowls. Having the dishes ready also makes the pouring stage easier.
2. Heat the cream and sugar
Put the cream and sugar in a saucepan with enough spare capacity for the mixture to rise. Warm over medium heat, stirring until the sugar dissolves. Scrape gently across the bottom of the pan so crystals do not remain there. Once the mixture reaches a gentle boil, reduce the heat as necessary to keep it controlled.
3. Maintain a gentle boil for three minutes
Start timing when the cream is bubbling steadily. Let it boil gently for three minutes, stirring frequently. Stay beside the pan: cream can climb quickly, and a small pan can overflow. The aim is an even, controlled bubbling stage, not a vigorous rolling boil that spits or scorches the mixture.
4. Add the lemon off the heat
Remove the saucepan from the heat. Stir in the measured lemon juice and the optional finely grated zest. Mix thoroughly, then leave the mixture to stand for ten minutes. It will still be pourable. Do not expect it to have its finished refrigerator texture at this point, and do not continue boiling it after adding the juice.
5. Pour and refrigerate
Pour the mixture into a measuring jug if that makes portioning easier. Divide evenly between the ramekins. Once the dishes are no longer hot, cover and refrigerate promptly. Chill for at least four hours, or overnight, until the surface holds and a spoon leaves a clean path through the cream. Avoid stirring or repeatedly moving the dishes while they set.
6. Finish just before serving
Add a small pinch of fresh lemon zest to each dish. Keep the garnish light: the smooth surface and pale color are part of the dessert's appeal. Serve straight from the refrigerator with a small spoon. A cool posset has a firmer, cleaner texture than one left standing on a warm table.
Getting the texture right
The most useful checks happen before the ramekins enter the refrigerator. Measure the juice accurately, use the specified cream, and complete the gentle boiling stage. Changing all three at once makes it difficult to know why a batch behaves differently. Adding extra lemon juice for a stronger flavor is especially tempting, but more acidity is not a reliable route to a better texture.
If the posset remains loose after four hours, give it more time before deciding it has failed. Deeper dishes and a crowded refrigerator can slow cooling. If it is still liquid the next day, check the cream's fat content and your measurements. You can serve an unset batch as a chilled lemon cream sauce rather than presenting it as a set dessert.
A slightly grainy finish can come from a harsh boil or uneven mixing. Use moderate heat and stir steadily. For an especially smooth surface, strain the finished mixture before pouring, particularly if you used zest. This removes the zest pieces, so the final flavor will be more subtle; a fresh garnish restores some fragrance.
Making it ahead and serving it well
This is a convenient dessert for an evening meal because the final work is already done. Prepare the ramekins a day ahead, keep them covered, and add the garnish when you are ready to serve. Avoid stacking containers directly on the surface. A tray helps you carry all six portions without tilting them.
Keep refrigerated and use within three days for the best texture and flavor. Freezing is less useful here because thawed cream can lose its smooth consistency. If you need a smaller batch, halve every ingredient and use three ramekins, while keeping the same careful stovetop technique.
For a simple table setting, choose off-white dishes and let the lemon provide the color. You can offer plain shortbread separately if you like, but it is an optional accompaniment rather than part of this recipe. The image and short video focus on the posset itself, with lemon zest and no additional topping.
Frequently asked questions
Does posset need gelatin?
This version does not. Its recipe is built around high-fat cream and lemon juice. Adding gelatin would change both the ingredient list and the finished texture.
Can I make it with bottled lemon juice?
Freshly squeezed juice is preferable for flavor. Bottled products vary, so substituting one can change the result. Use the measured amount rather than adding juice by taste alone.
Is it ready after the ten-minute standing stage?
No. That pause comes before portioning. The dessert still needs at least four hours in the refrigerator to develop its set texture.
Can I use large drinking glasses?
You can use small heat-resistant glasses, but wide, shallow ramekins are easier to portion and cool. Do not pour a hot mixture into glassware that is unsuitable for heat.
Feedback from a Home Test
A friend who tried this recipe used orange instead of lemon because lemons were unavailable. He found the preparation quick and easy and reported that the dessert turned out well and tasted delicious. This feedback reflects his experience with the orange variation.
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