
Bright, tangy, and silky smooth, this lemon curd is the kind of thing you'll want to spread on absolutely everything — toast, scones, tart shells, or a spoon straight from the jar. It gets its gorgeous texture from a classic double-boiler method, where gentle, indirect heat coaxes the eggs and sugar into a thick, glossy custard without any risk of scrambling. Cold butter whisked in at the end gives it that luxurious, melt-on-your-tongue richness that store-bought versions can never quite match. The recipe relies entirely on fresh lemons, eggs, sugar, butter, and salt — clean, simple pantry staples with no hidden spices or warm aromatics to worry about. Straining the finished curd through a fine-mesh sieve ensures a perfectly smooth result, free of any zest bits or cooked egg strands. If you've ever been burned by a jarred curd that tasted flat or overly sweet, making it from scratch with real lemon juice is a total revelation — the flavor is sharp, fresh, and deeply citrusy in the best possible way.
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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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