
Bright, tangy, and impossibly silky, this lemon curd is the kind of thing you'll want to spread on absolutely everything — toast, scones, crepes, or straight from the spoon. It's built entirely from eggs, butter, sugar, fresh lemon juice, and zest, so every ingredient is clean, simple, and easy to verify. The double-boiler method is the real secret here: gentle, indirect heat keeps the eggs from scrambling while the constant whisking builds that signature glossy, spoonable texture. Cooking the mixture to 160°F ensures it's fully food-safe without sacrificing the bright citrus flavor. Whisking in cold butter cubes at the end gives the curd its luxurious body and a beautiful sheen. Straining it through a fine-mesh sieve at the finish removes any stray zest solids, leaving you with a perfectly smooth result that looks like it came from a fancy patisserie. A jar of this in the fridge is genuinely one of the most useful things you can make.
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Fill a small saucepan with about 1 inch of water and bring to a gentle simmer over medium heat. Set a heatproof bowl over the saucepan, making sure the bottom of the bowl does not touch the water.
Whisk the eggs, sugar, lemon juice, lemon zest, and salt together in the heatproof bowl until the sugar is dissolved and the mixture is smooth.
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