Easy Lime Posset Recipe (with Lemon Variation) – Classic British Dessert
So, remember we had that bag of limes and having used some in cocktails, we made some smoothies with it? Well there are a couple left so what else can they be used for? Over to chef Robert who has provided a simple and classy dessert recipe using limes and a lemon. Meet the lemon and lime posset.
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What is a Posset?
A posset is a classic British dessert that transforms just three simple ingredients—cream, sugar, and citrus—into something absolutely magical. The beauty of this dessert lies in its chemistry. When you heat cream and sugar together, then add citrus juice, the acid naturally sets the mixture into a silky, spoonable custard without any eggs, gelatin, or complicated techniques.
The term “posset” has traveled through quite a journey since Ancient Greek times. Originally, it referred to a fermented drink made with wine, oil, cheese, and old grain—nothing like the dessert we enjoy today. During medieval England and through the 19th century, a posset was a warm, comforting drink made with milk curdled by wine or ale, often spiced and served to those feeling under the weather. Wealthy households kept special ceramic vessels called posset pots with two handles specifically for serving this medicinal beverage.
Today’s posset evolved into an elegant make-ahead dessert that’s become a staple of British cooking. The modern version sits somewhere between a mousse and a custard, with a texture that’s richer and more substantial than its historical predecessor. The citrus acid does all the work of setting the cream, creating that perfect spoonable consistency that feels luxurious on the palate.
Posset vs Syllabub: What’s the Difference?
If you’ve encountered syllabubs in British dessert menus, you might wonder how they differ from possets. A syllabub is actually the lighter, frothier cousin of the posset. Dating back to the 16th century, syllabubs were made by whisking milk or cream with wine, cider, or another acidic ingredient until frothy and airy, then flavoring with sugar, lemon, or sherry.
The key difference comes down to texture and technique. A posset is heated and sets into a firm, custard-like consistency that you can spoon neatly onto a plate. A syllabub stays light and airy, more like a thick whipped cream or foam that’s typically served in glasses. Think of a posset as the sophisticated, dinner-party-ready version, while a syllabub offers a more casual, lighter finish to a meal.
Both desserts showcase that wonderful marriage of cream and citrus, but the posset’s denser texture and make-ahead convenience make it the better choice for entertaining.
Why You’ll Love This Lime Posset Recipe
This lime posset recipe answers the question every busy cook asks: how can I make an impressive dessert that doesn’t require hours in the kitchen or a degree in pastry arts? The answer sits in these three ingredients.
You’ll have the mixture in ramekins within 15 minutes of starting, and the refrigerator does the rest of the work while you focus on the main course. There’s no temperamental egg custard to worry about, no water baths, no watching anxiously through the oven door. The acid in the lime juice sets the cream naturally, giving you consistent results every single time.
The flavor combination of lime and lemon brings something special to the traditional lemon-only version. Lime adds a slightly tropical brightness that cuts through the richness of the cream beautifully, creating layers of citrus that keep each spoonful interesting. That tangy-sweet balance makes this dessert feel refreshing rather than heavy, even after a substantial meal.
Here’s what makes this recipe particularly brilliant for entertaining: you can make it up to two days ahead, it serves beautifully in individual portions, and it looks far more complicated than it actually is. Your guests will think you’ve spent hours perfecting this elegant dessert, when really, you’ve spent more time choosing the wine.
What you need
- 500 ml double cream
- 5 oz caster sugar
- 1 large lemon (juice of)
- 2 small limes (juice of)
How to make a lemon and lime posset
Combine the sugar and cream in a pan and bring it to the boil.
Reduce the heat and simmer for around five minutes then add the juice of the two fruits, whisking as you do
Bring the mixture back to the boil and pour into four medium ramekins
Chill the mixture for four hours
Choosing Your Ingredients
The simplicity of this recipe means each ingredient plays a starring role, so quality matters more than usual.
Double Cream (Heavy Cream): You need cream with at least 36% fat content for the posset to set properly. Double cream in the UK or heavy whipping cream in the US both work perfectly. The fat content allows the acid to work its magic and create that luxurious, thick texture. Single cream or half-and-half won’t set properly, leaving you with something more like a citrus soup.
Fresh Citrus Juice: Always use freshly squeezed juice from real limes and lemons. Bottled juice simply doesn’t have the same bright, vibrant flavor or the right acid balance to create the perfect set. You’ll need about 80ml (1/3 cup) of combined juice, which typically comes from one large lemon and two small-to-medium limes. Roll your citrus fruits firmly on the counter before cutting to release more juice.
Caster Sugar: This fine sugar dissolves quickly and completely in the hot cream. Regular granulated sugar works too, though it may take an extra minute of stirring to dissolve fully. If you’re working with granulated sugar, give it time to fully incorporate before adding the citrus juice.
Flavor Variations to Try
Once you’ve mastered the basic lime posset technique, the world of citrus opens up to your experimentation.
Key Lime Posset: Use all key limes for that distinctive, slightly more floral flavor. You’ll need about 6-8 key limes to equal the juice from two regular limes. This variation pairs beautifully with a graham cracker or digestive biscuit base.
Pure Lemon Posset: Swap the limes for lemons entirely, using about three lemons total. This creates the most traditional British version with that classic, sunny lemon flavor. The taste becomes slightly mellower and less sharp than the lime version.
Raspberry Lemon Posset: Make a pure lemon version, then swirl in fresh raspberry purée just before chilling. The berry flavor adds gorgeous color and a sophisticated twist on the classic.
Orange and Lemon Posset: Replace one of the limes with blood orange or regular orange juice for a sweeter, more mellow citrus profile. This version works particularly well during winter months when blood oranges are in season.
Elderflower Posset: Add two tablespoons of elderflower cordial along with the citrus juice for a subtle floral note that makes this dessert feel especially springtime-special.
The key with any variation is maintaining the right balance of acid to cream. If you deviate significantly from the citrus amounts, your posset might not set properly. Stick close to the original juice quantities, just changing which citrus fruits contribute to that total.
Getting Your Posset Perfect Every Time
Making a posset is remarkably straightforward, but a few key techniques ensure flawless results.
When heating the cream and sugar together, bring it to a proper boil—you should see active bubbling across the surface. This isn’t just about dissolving the sugar. The heat actually changes the protein structure in the cream, which helps it set more reliably when you add the acid. Let it simmer for a full three to five minutes to ensure everything is thoroughly heated through.
Adding the citrus juice is your crucial moment. Pour it in slowly while whisking continuously to prevent any lumps from forming. The mixture will look thin and you might worry it won’t set—this is completely normal. The setting happens gradually during the chilling process, not immediately. Once you’ve whisked the juice in thoroughly, bring everything back to a boil briefly, which helps activate the setting process.
Straining is optional but recommended. Pour the hot mixture through a fine-mesh sieve into a jug before dividing between ramekins. This catches any small bits of zest or cream that might have formed during heating, giving you a perfectly smooth texture in your finished dessert.
For the setting stage, four hours is the minimum for a proper set, but overnight is even better. The texture continues to improve and firm up, so if you’re making these for tomorrow’s dinner, you’re actually getting ahead in the best possible way. The possets will keep beautifully in the refrigerator for up to three days, covered with plastic wrap.
Troubleshooting Common Issues
Posset didn’t set? This usually means your cream wasn’t hot enough when you added the juice, or you didn’t use full-fat cream. Unfortunately, there’s no fixing a posset that hasn’t set—the chemistry needs to happen during that first heating. Make sure your cream really boils next time.
Texture is grainy? You likely didn’t strain the mixture, or some of the cream curdled due to overheating. Strain through a fine sieve next time, and avoid letting the mixture boil rapidly for too long after adding the juice.
Too tart? Different citrus fruits have varying acidity levels. Next time, reduce the juice by a tablespoon and add it back if needed. You want a good balance of sweet and tart, but not so much acid that it puckers your mouth.
Too sweet? Reduce the sugar by 10-15g, though be aware this might also affect the setting slightly. The sugar isn’t just for sweetness—it also contributes to the final texture.
How to Serve Your Lime Posset
The traditional presentation involves serving possets in individual ramekins or small glass pots, which showcases that lovely pale yellow-green color. Small wine glasses, espresso cups, or even pretty jam jars work beautifully for a more casual presentation.
Classic Garnishes: A small dollop of unsweetened whipped cream on top provides a lovely contrast to the tangy posset. A light dusting of icing sugar catches the light beautifully and adds a professional touch. Some grated lime or lemon zest sprinkled over the top brings out the citrus aroma as soon as the dessert arrives at the table.
With Fresh Fruit: Fresh raspberries, strawberries, or blueberries provide both color contrast and a fresh element that cuts through the richness. Place a few berries on top just before serving, or serve a small handful on the side. During summer, a few thin slices of perfectly ripe peach or nectarine make an elegant addition.
Shortbread Accompaniment: A buttery shortbread biscuit on the side is the traditional Scottish pairing and works perfectly. The crumbly texture contrasts beautifully with the smooth posset, and gives your guests something to do with their hands while savoring each spoonful. You could also serve thin, crispy almond tuiles for an extra-fancy presentation.
Make it Special: For dinner parties, set your ramekins on small dessert plates with a shortbread biscuit leaning against the side, three fresh raspberries artfully placed, and a tiny sprig of fresh mint. This simple arrangement looks restaurant-quality but takes mere seconds to plate.
Planning Ahead with Possets
The make-ahead nature of possets makes them one of the smartest choices for entertaining. You can prepare them up to three days before serving, which means your dessert is completely handled while you focus on everything else.
Make-ahead timeline: For the best texture and flavor, make your possets the day before serving. This gives them time to fully set and allows the flavors to mellow and develop. They’ll be good for up to three days, but the texture is optimal between 24-48 hours after making.
Storage tips: Once set, cover each ramekin tightly with plastic wrap to prevent them from absorbing other flavors from your refrigerator. Keep them away from strong-smelling foods like onions or fish. The surface can dry out slightly if left uncovered, creating a skin that affects the silky texture.
Can you freeze possets? Technically yes, but it’s not recommended. The cream separates slightly during freezing and thawing, and while the posset will still be edible, you’ll lose that perfect, velvety texture that makes this dessert so special. Make them fresh and keep them refrigerated instead.
Transporting possets: If you need to take these to someone else’s home, they travel remarkably well. Keep them upright in a shallow box or carrier, covered with plastic wrap. They’re stable enough that gentle movement won’t disturb the set texture. Just add your garnishes after arrival.
Your Posset Questions Answered
What makes a posset set? The acid in the citrus juice reacts with the proteins in the heated cream, causing them to coagulate and create a gel-like structure. This is similar to how cheese is made, but much gentler. The heat is essential to prepare the cream proteins for this reaction, which is why the mixture must be brought to a proper boil first.
Why do you heat the cream before adding lemon juice? Heating changes the structure of the cream proteins so they can properly react with the acid. If you add lemon juice to cold cream, nothing happens. The heat essentially “activates” the proteins so they’re ready to form bonds when the acid arrives. This is pure kitchen chemistry at work.
Can I use coconut cream instead of dairy cream? Unfortunately, no. Coconut cream doesn’t have the same protein structure as dairy cream, so it won’t set properly with citrus acid. The reaction that makes a posset work is specific to dairy proteins. You need that full-fat dairy cream for authentic results.
How long do possets keep? In the refrigerator, properly covered, they’ll stay fresh for three days. After that, the texture starts to weep slightly and the fresh citrus flavor fades. For best results, make them no more than two days ahead.
Can I make a large posset instead of individual servings? You can, but individual portions look more elegant and make serving much easier. If you do use a large dish, the setting time might be slightly longer, and you’ll need to spoon portions rather than unmolding them. Individual ramekins are worth the small extra effort.
What’s the difference between a posset and panna cotta? Panna cotta uses gelatin to set cream, creating a firmer texture that can be unmolded. A posset sets through the acid reaction and has a softer, more spoonable consistency. Panna cotta also uses vanilla or other flavorings, while possets rely on citrus for their flavor profile.
My posset has a slight skin on top—is this normal? A thin skin can form if the possets aren’t covered during chilling. It’s harmless but affects the texture. Either scrape it off before serving or prevent it by covering the ramekins with plastic wrap as soon as they’re cool enough to touch.
Can I reduce the sugar for a less sweet version? You can reduce it slightly—try 120g instead of 140g (5 oz)—but don’t go much lower. The sugar isn’t just for sweetness; it also affects how the posset sets and the final texture. Too little sugar and you might end up with a grainy or separated result.
Lemon and Lime Posset
A tasty and simple dessert made with lemon and lime
Ingredients
- 500 ml double cream
- 5 oz caster sugar
- 1 large lemon (juice of)
- 2 small limes (juice of)
Instructions
- Combine the sugar and cream in a pan and bring it to the boil. Reduce the heat and simmer for around five minutes then add the juice of the two fruits, whisking as you do
- Bring the mixture back to the boil and pour into four medium ramekins
- Chill the mixture for four hours
Notes
To serve you can take some whipped cream and add to the top of the mixture with a dusting of icing sugar. To add a little extra flavour, finish with a strawberry or use the remaining citrus fruits, grated up and sprinkled on top. A shortbread biscuit is also often served alongside the dessert.
Nutrition Information:
Yield:
4Serving Size:
1Amount Per Serving: Calories: 582Total Fat: 46gSaturated Fat: 29gTrans Fat: 2gUnsaturated Fat: 14gCholesterol: 143mgSodium: 35mgCarbohydrates: 44gFiber: 2gSugar: 40gProtein: 4g
