This silky lemon curd starts with bright lemon zest and juice whisked into sugar and whole eggs, then gently heated with butter over a double boiler. Whisk constantly until it thickly coats a spoon, strain for a smooth finish and cool. Yields about 2 cups in 20 minutes. Store chilled in sterilized jars for up to two weeks; substitute coconut oil for a dairy-free version.
My kitchen smelled like a citrus grove in Provence the morning I accidentally doubled the lemon zest and discovered curd heaven. The windows were fogged from the simmering water below my bowl, and my cat sat on the counter pretending not to care about the butter cubes I kept dropping.
I packed a small jar of this into a picnic basket for my friend Sarahs birthday and she ate the entire thing with a spoon before we even opened the sandwiches.
Ingredients
- 3 large lemons (zest and juice, about 1/2 cup juice): Room temperature lemons yield more juice, so pull them out of the fridge an hour ahead if you can.
- 1 cup (200 g) granulated sugar: The sugar balances the tartness perfectly, but you can dial it back slightly if your lemons are on the sweeter side.
- 2 large eggs plus 2 large egg yolks: The extra yolks are what give this curd its velvety, luxurious texture.
- 1/2 cup (115 g) unsalted butter, cut into cubes: Cold cubes work fine since they melt into the mixture gradually, enriching it as you whisk.
Instructions
- Zest and Squeeze:
- Run your zester firmly over each lemon, rotating as you go, then halve and juice them until you have roughly half a cup of liquid gold.
- Whisk the Base:
- In a medium heatproof bowl, whisk the sugar, whole eggs, and extra yolks until the mixture is smooth and slightly paler in color.
- Add the Citrus:
- Pour in the lemon juice and scatter in the zest, stirring until everything is uniformly combined.
- Set Up the Double Boiler:
- Place your bowl over a saucepan filled with an inch or two of gently simmering water, ensuring the bottom of the bowl never touches the water surface.
- Cook and Thicken:
- Drop in the butter cubes and whisk constantly for about seven to ten minutes until the curd thickens enough to coat the back of a spoon like a silky ribbon.
- Strain and Cool:
- Pour the hot curd through a fine mesh sieve into a clean bowl, pressing gently with a spatula to catch any stray bits of zest or cooked egg.
- Jar and Chill:
- Let it cool to room temperature, then spoon it into sterilized jars and refrigerate for up to two weeks, though it rarely lasts that long.
Every December now I make a triple batch and hand out little jars tied with ribbon, and people act like I gave them something precious and rare.
Getting Creative with Flavors
Swap the lemons for limes and suddenly you have a Key lime pie filling that tastes tropical and bright.
What to Spread It On
Layer it between shortbread cookies, swirl it into yogurt, or thin it slightly with cream and drizzle it over pancakes on a lazy Sunday.
Storage and Shelf Life
Keep your jars sealed tightly in the coldest part of the fridge, not the door, and they will stay fresh and vibrant for a full two weeks.
- A piece of plastic wrap pressed directly on the surface prevents a skin from forming.
- You can freeze lemon curd for up to three months in airtight containers.
- Always use a clean spoon when dipping into your jar to avoid introducing bacteria.
This small jar of sunshine has a way of making ordinary mornings feel a little more special. Share it generously and watch people smile.
Recipe Questions & Answers
- → How can I tell when the curd is done?
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The curd is ready when it thickly coats the back of a spoon and holds a line when you run your finger across it. It should move slowly and appear glossy; constant whisking helps prevent curdling.
- → Is fresh lemon juice necessary?
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Fresh lemon juice and zest give the brightest citrus flavor. Bottled juice can be used in a pinch, but increase zest slightly to restore lost brightness.
- → Can I make a dairy-free version?
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Yes—replace the butter with solid coconut oil for a dairy-free alternative. Texture will be slightly different and firms more when chilled, so cool fully before storing.
- → How should I store the curd?
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Cool to room temperature, transfer to sterilized jars, and refrigerate. It keeps well for up to two weeks. For longer storage, freeze in airtight containers for up to three months.
- → Are there tips to keep the curd smooth?
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Use a double boiler and whisk constantly to prevent egg curdling. Strain through a fine-mesh sieve to remove zest fibers and any cooked egg bits for a silky finish.
- → What are good uses and variations?
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Spread on toast or scones, fill cakes and tarts, or serve with pancakes and shortbread. For variations, try lime or orange juice, or add extra zest for stronger citrus notes.