There’s something magical about a dessert that looks fancy, tastes luxurious, and yet requires the same effort as remembering where you left your keys. Lemon posset is exactly that kind of kitchen sorcery.
It is creamy, silky, citrusy—and so simple it almost feels like cheating.
A simpler and quicker version of my make ahead lemon panna cotta.
Honestly, the first time I made lemon posset, I kept checking the fridge like a suspicious parent because I was convinced it couldn’t possibly set. It did. Perfectly. And then I ate half of it standing up, still holding the fridge door open.
The real turning point, though, was when I served it to a friend who is famously unimpressed by desserts. This is the same person who once described crème brûlée as “just pudding with a hat.” But one spoonful of lemon posset and she froze, blinked twice, and said, “Wait… why is this so good?”
That’s when you know you’ve got a keeper: when even the dessert skeptics start questioning their life choices.
Origin
Posset comes from a wonderfully odd corner of food history: it started life in medieval Europe as a hot, boozy, curdled milk drink—basically the Tudor version of a wellness shot.
People mixed hot milk with ale or wine, added spices like nutmeg and cinnamon, and sipped it as a cure‑all for colds and stomach troubles. Over time, the drink faded away, but the name survived and shape‑shifted into the silky lemon‑cream dessert we know today.
Your elegant little 3 ingredient lemon posset?
It’s the glow‑up of a medieval nightcap.
So today, we’re making the creamiest, brightest, most ridiculously easy lemon posset—scaled perfectly for two lemons, two people, or one person who isn’t in the mood to share.
It is sunshine in a glass, with a tiny bit of attitude.
Enjoy!
Easy 3 Ingredient Lemon Posset
Ingredients for 4 portions
- 2 large fresh lemons
- 1 cup (240 ml) cooking cream
- 1.5 oz (45 g) caster sugar
Method
- Slice the lemons in half. Scoop out the lemon flesh. Pat the lemon halves dry with kitchen paper.
- Using your hands, squeeze out the lemon flesh in a cup until you get about 1/4 cup (60 ml) of freshly squeezed lemon juice.
- Combine cream and sugar in a small saucepan. Heat gently until it reaches a soft simmer, don’t let it overcook. Let it bubble for 2 minutes, stirring so the sugar dissolves fully. This brief simmer is what gives the posset its silky texture.
- Take the pan off the heat. Pour in the lemon juice (and zest if using) while whisking. The mixture will thicken almost immediately as the acid reacts with the hot cream.
- If you want it brighter, add a teaspoon more juice. If it tastes too sharp, add a teaspoon of cream.
- Strain through a fine sieve into the hollowed out lemon boats to remove any zest or tiny curdled bits.
- Refrigerate for at least 3 hours, ideally 4 to 6 hours. It will firm into a smooth, spoonable custard.