1-Step 1: Set up your double boiler Fill the bottom of a double boiler with 1 to 2 inches of water and bring it to a boil. Then reduce the heat to a gentle simmer. If you do not have a double boiler, a heatproof glass bowl set over a saucepan works well too. This gentle heat matters because lemon curd can scorch fast if the temperature climbs too high.

2-Step 2: Combine the base ingredients In the top pan or heatproof bowl, whisk together the egg yolks, granulated sugar, lemon zest, lemon juice, and salt. Keep whisking until the mixture looks smooth and combined. Fresh lemon juice gives the best flavor, and non-metal utensils can help avoid any metallic taste in this homemade lemon curd.

3-Step 3: Cook slowly and whisk constantly Place the bowl over the simmering water and whisk without stopping. You want the mixture to thicken into a texture that looks a lot like hollandaise sauce. This usually takes about 10 minutes, or until the curd reaches 170°F to 77°C. A thermometer is handy, but you can also test by dipping a spoon into the curd. If it coats the back of the spoon, you are right on track. Whisking steadily is the secret to an easy to make lemon curd that stays smooth. Slow heat plus constant movement helps prevent curdling, which is what gives the curd its silky finish.

4-Step 4: Add the butter Once the curd has thickened, remove it from the heat right away. Add the butter pieces one at a time and whisk until each piece melts into the mixture. The butter makes the curd glossy, creamy, and luxurious without being fussy. If you are making the thicker version, using 2 egg yolks and 1 whole egg can give you a firmer result for fillings.

5-Step 5: Strain and chill For an extra smooth finish, you can strain the curd through a fine-mesh sieve into a jar or bowl. This removes any tiny bits of cooked egg zest or egg. Then press plastic wrap directly onto the surface of the curd so a skin does not form while it cools. Refrigerate until set. The total time is about 1 hour 15 minutes, including cooling, though the active work is only 15 minutes. That makes this classic lemon curd recipe a great make-ahead option for busy weeks or last-minute dessert needs.

6-Step 6: Serve and enjoy Once chilled, your tangy lemon curd recipe is ready to use. Spoon it onto scones, layer it into parfaits, fill tart shells, or spread it on toast. It is also fantastic as a topping for pancakes, cheesecake, and pound cake. For a fun brunch pairing, try it with peanut butter and jelly pancakes for a sweet breakfast spread.