Use Large Lemons
Larger lemons are easier to hollow and hold more filling.
Choose Thick-Skinned Lemons
Thin lemon shells can tear easily when you remove the flesh.
Keep the Cream Below a Hard Boil
Gentle heat gives you more control and a smoother result.
Add Lemon Juice Off the Heat
This helps reduce the risk of curdling.
Chill Thoroughly
The posset needs time to finish setting.
Overnight refrigeration is ideal if you are serving guests.
Add Sugar Only Before Serving
If the sugar sits on the cold posset for too long, it begins dissolving.
Torch it at the last minute for the crispest surface.
Use a Torch for Lemon Shells
Do not put lemon shells under an oven broiler.
The peel can scorch or soften before the sugar caramelizes properly.
Frequently Asked Questions
Can I Make Lemon Posset Without a Torch?
Yes.
Simply skip the brûlée layer and serve the chilled lemon posset as-is.
You will still have a creamy, bright dessert.
Can I Use Ramekins Instead of Lemon Halves?
Absolutely.
Small ramekins, dessert glasses, or bowls work very well.
If using oven-safe ramekins, you may also be able to caramelize the sugar carefully under a broiler, although a torch gives more control.
Why Did My Posset Not Set?
Possible causes include not heating the cream long enough, using a lower-fat dairy product, adding too little lemon juice, or not chilling long enough.
Why Did My Cream Curdle?
The cream may have been boiling too aggressively when the lemon juice was added.
Take it off the heat first and stir the juice in gradually.
Can I Use Meyer Lemons?
You can, but they are sweeter and less acidic than regular lemons.
The flavor will be softer, and you may need to adjust the juice amount slightly.
Can I Make It Sweeter?
Yes.
Add a little more sugar to the cream, but keep the overall balance so the lemon still tastes fresh.
Make-Ahead Tips
Lemon posset is an excellent make-ahead dessert.
Prepare and fill the lemon shells up to 1 day ahead.
Cover and refrigerate.
Do not add the brûlée sugar until just before serving.
This gives you the best crackly topping while keeping the filling perfectly chilled.
Storage
Store un-brûléed lemon posset covered in the refrigerator for up to 3 days.
Once the sugar has been torched, serve as soon as possible.
The caramelized top gradually softens as it absorbs moisture from the filling.
Lemon Posset Brûlée Recipe Card
Prep Time: 20 minutes
Cook Time: About 10 minutes
Chill Time: 2–4 hours or overnight
Yield: About 8–10 lemon-half servings
Ingredients
- 2 cups (480ml) heavy whipping cream
- ½ cup (100g) granulated sugar
- 1 tablespoon lemon zest
- ⅓ cup (80ml) fresh lemon juice
- 1 teaspoon vanilla extract
- 4–5 large lemons for serving
- Additional granulated sugar for brûlée topping
Instructions
- Cut the lemons in half and carefully remove the flesh.
- Juice the reserved lemon flesh and strain.
- Heat cream, sugar, and zest over medium-low heat for about 5 minutes, stirring frequently.
- Do not allow the cream to boil aggressively.
- Remove from heat and stir in vanilla.
- Gradually add the lemon juice while stirring.
- Strain if desired.
- Cool for about 10 minutes.
- Pour into hollow lemon halves.
- Refrigerate for at least 2–4 hours, preferably overnight.
- Before serving, sprinkle each posset with a thin layer of sugar.
- Torch until golden and caramelized.
- Allow the sugar to harden briefly, then serve immediately.
Notes
Use full-fat heavy whipping cream for proper setting. Add the lemon juice after removing the cream from the heat. Chill thoroughly before adding the brûlée topping. Choose large, thick-skinned lemons if serving the dessert inside the shells. Add and torch the sugar only immediately before serving for the crispest caramel shell.