Lemon Posset (3 Ingredients Recipe)

Lemon posset is an incredibly indulgent, no-bake treat that’s perfect for summer. It’s creamy, tangy, and packed with bright lemon flavor, but the best part? It only takes three simple ingredients and less than 15 minutes to make. Plus, it’s egg-free, vegetarian, and gluten-free—great for almost everyone at the table!

You might be amazed at how beautifully these lemon possets set up, all without using gelatin or agar. If life hands you lemons, skip the usual lemonade and whip up some possets instead—I promise these will become a favorite 🙂

This recipe makes use of every bit of the lemon—from the juice to the zest and even the peel! I love how fancy it looks served inside bright yellow lemon shells, but if you can’t find large lemons, no worries—you can easily use ramekins or pretty dessert bowls too.

The secret to that luscious, silky texture is all about chemistry: the acid in the lemon juice reacts with the heated cream, causing it to thicken and set as it cools. Just be sure not to boil your cream, and add the lemon juice at the perfect moment to keep it from curdling.

Lemon posset is a delightful little showstopper that requires zero baking. Made with only heavy cream, sugar, and fresh lemon juice, it comes together quickly on the stove in under 15 minutes and then chills until perfectly set. It’s naturally eggless, vegetarian, and gluten-free, making it a versatile choice for any guest. You can go the extra mile and serve it in lemon shells for a charming, elegant presentation or keep it simple with ramekins—the choice is yours!

This post covers everything you need to get your lemon possets just right: why full-fat cream works best, clear step-by-step photos that show you how to zest and juice lemons, and how to fill lemon shells beautifully. You’ll find handy tips on passing the mixture through a sieve to get that silky-smooth finish, troubleshooting if your cream splits, plus practical storage and make-ahead advice. I even share a few easy ways to jazz up your possets, like turning them into posset brulee or adding berries for a pretty twist.

Whether you’re aiming for a fuss-free dessert to bring to a potluck, a sophisticated treat to impress guests at a dinner party, or a quick summer dessert for your family, this recipe guides you to consistently delicious, bright lemony results without stress. Keep scrolling for the full recipe and detailed photos to get started!

Why You’ll Love It

If you’re wondering if you should give this lemon posset a spot in your go-to recipe collection, absolutely yes! Here’s what keeps me making it again and again in my kitchen:

• Super simple and fast: Only heavy cream, sugar, and fresh lemon juice—plus less than 15 minutes of active prep. No oven, no fancy tools needed.
• Sets naturally without eggs or gelatin: The acidity of lemon juice thickens the warm cream as it cools, giving you a perfectly smooth set every time without any weird stabilizers.
• Bright, balanced flavor: Luscious creamy sweetness meets fresh, zesty lemon punch—imagine lemon cheesecake meets custard. If you love that profile, try this creamy lemon pie as well.
• Charming presentation: Serve in lemon shells for that wow-factor or use simple ramekins if you need a crowd-pleasing, no-fuss dessert.
• Flexible and easy to customize: Adjust sweetness, stir in a splash of vanilla, swap out lemons for other citrus fruits like oranges or mandarins, or get creative by making lemon posset brulee or tart filling. Set it in a graham cracker crust for an easy tart base.
• Perfect for parties and make-ahead: Make these in advance, chill until set, then garnish right before serving. They keep beautifully for 24 to 48 hours in the fridge.
• Diet-friendly: Gluten-free, eggless, and vegetarian by default—great for accommodating most guests.
• Easy fixes if things go wrong: If your cream looks like it’s about to split, just take it off the heat for 10–15 seconds and then slowly add lemon juice while stirring. You can also use low-fat cream with a bit of cornstarch to help it thicken if needed.

All these points add up to a dessert that’s not only simple and impressive but also perfect for warm summery evenings, special occasions, and anytime you want something fresh and creamy without a lot of work.

If I had to sum up lemon posset’s flavor, I’d call it a blend of creamy lemon cheesecake and custard with a lovely zing of citrus in every spoonful. The richness and sweetness from the cream are perfectly balanced by the bright, tangy lemon, making it an ideal dessert for sunny days and gatherings (it’s especially great for potlucks or a dinner party finale—and if you want something sliceable, try classic lemon bars).

Ingredients You’ll Need

• Heavy Cream- 1 cup (240 ml)
• Fresh Lemon Juice- 3 tbsp
• Sugar- 4 to 5 tbsp
• Lemon Zest- 1.5 tsp
• Vanilla Extract- 2 to 3 drops (optional)

Step-by-Step Directions

1. Rinse and dry lemons, zest with a zester or fine grater, set zest aside, then cut lemons in half vertically.
2. Using a small knife, score around the lemon pulp and scoop out the pulp to create lemon shells (skip if using ramekins or bowls).
3. Place the lemon pulp in a fine-mesh strainer and press with a spatula or spoon to extract the juice (or squeeze lemons directly if using ramekins).

4. Pour heavy cream into a small saucepan, stir in 4 tablespoons sugar and optional vanilla, warm over medium heat stirring often until the sugar dissolves and the cream simmers gently — do not boil.

   

5. Remove the saucepan from the heat, wait 10–15 seconds to cool slightly, then slowly add the lemon juice and zest while stirring constantly until the mixture begins to thicken.
6. Pass the lemon-cream mixture through a fine sieve to remove any lumps or air bubbles.
7. Carefully spoon the strained lemon cream into prepared lemon shells or ramekins.

8. Refrigerate for 2 to 3 hours until set.

   

Tips for Best Results

1. While heavy cream is best for texture and flavor, if you want to use low-fat cream, whisk in 1 teaspoon of cornstarch or custard powder before heating to help it thicken properly. For tips on choosing the right cream and understanding fat percentages, see How to Make Perfect, Easy Homemade Whipped Cream.
2. Feel free to experiment with other citrus fruits! Oranges, mandarins, or clementines all work with the same technique and make tasty variations.

3. Strain your lemon cream through a sieve to get rid of any air bubbles or lumps (just as you would when making an ultra-smooth vanilla pastry cream). This step takes the silky smoothness to the next level—don’t skip it!

Variations and Flavor Ideas

1. Want to wow your guests even more? Turn your lemon posset into a lemon posset brulee. Once the posset is set, sprinkle a thin layer of caster sugar on top and caramelize it with a kitchen torch for a beautiful, crisp topping. Serve right away.
2. I often add a few drops of vanilla extract because it adds warmth and depth to the lemon flavor, but it’s totally optional. You can also swirl in 2–3 teaspoons of strawberry or blueberry puree to bring a fruity note, then garnish with fresh berries.

3. This tart lemon cream makes a fantastic filling for fruit tarts or berry tartlets too. Just spoon it in, chill, and top with your favorite fresh fruit. Or use it as the base for a no-bake lemon tart.

• Prep Time: About 5 minutes
• Cook Time: Approximately 10 minutes

Storage and Make-Ahead Tips

Keep your lemon possets chilled in an airtight container in the fridge for up to 2 days. If you’ve served them inside lemon shells, stand the shells upright in a shallow dish and cover with cling film or a lid to protect them from fridge smells and spills.

Avoid freezing lemon possets. It sounds like a convenient option, but freezing messes with the cream’s texture and leaves you with a grainy or watery dessert after thawing.

Make-ahead magic: You can prepare the possets fully and chill them for the initial 2–3 hours to set. Cover them tightly and keep refrigerated. They taste best within 1 to 2 days of making. Planning for a crowd? A sliceable, no-bake lemon dessert that also benefits from an overnight chill is this Lemon Icebox Cake (no bake).

When you need to transport or serve:

• Keep possets in a cooler or insulated bag if you’re traveling, so they stay chilled and firm.
• If you’re using ramekins or dessert cups for serving, cover each with cling film or place them carefully in a sealed container for safe stacking.
• If a skin or bubbles form on the surface when making ahead, simply pass the mixture through a sieve before filling for a perfectly smooth top.

Common Questions Answered

• Q: Can I use low-fat cream instead of heavy cream? A: For the best texture and setting, use heavy cream with roughly 30% fat. Using low-fat cream is possible if you add about 1 teaspoon of cornstarch or custard powder whisked in before heating. This helps thicken the cream.
• Q: Does the posset really set without gelatin or agar? A: Yes! The acid in the lemon juice thickens the cream naturally as it cools, so you don’t need gelatin or any other stabilizer.
• Q: My cream curdled or split after adding the lemon juice—what went wrong? A: Most likely, the cream was too hot or boiling when you added the lemon. Take the pan off the heat, wait 10–15 seconds, then add the lemon juice gradually while stirring. If lumps appear, strain your mixture through a sieve to smooth it out.
• Q: Can I use bottled lemon juice? A: Fresh lemon juice and zest make a big difference in flavor—see how it shines in these lemon bars with a shortbread crust. Bottled juice tends to be flat and lacks that bright, fresh zing.
• Q: How long does it take to set? A: Let the possets chill for at least 2 to 3 hours to firm up nicely. If you can wait longer or overnight, the flavors deepen and the texture firms up even better.
• Q: Is freezing lemon possets a good idea? A: I don’t recommend it. Freezing changes the creamy texture and can lead to a grainy or watery dessert after thawing.
• Q: Can I swap other citrus fruits? A: Absolutely! Oranges, mandarins, or blends of citrus all work great using the same method. Just adjust sugar to taste depending on how sweet your fruit is.
• Q: Are lemon possets suitable for special diets? A: This recipe is naturally eggless, vegetarian, and gluten-free. It’s not dairy-free, but you can experiment with high-fat plant-based creams if you want a dairy-free version—just expect the setting to be hit or miss unless you add stabilizers.