Food Edition›Cook›French›Side›Lemon Curd
30 minIntermediateServes 2 cups
French · Side

Lemon Curd

This is a base preparation that requires your full attention at the stove. Once you learn to manage the temperature of the egg yolks, you will have a versatile component for tarts, cakes, or simple morning toast.

Total time
30 min
Hands-on
20 min
Serves
2 cups
Difficulty
Intermediate
Before you start

Watch the heat, not the clock.

Eggs will curdle quickly if the heat is too high. If you see small white bits, strain the finished curd through a fine-mesh sieve immediately to save the texture.

  • non-reactive saucepan (stainless steel or glass)
  • fine-mesh sieve
  • whisk
  • heat-resistant spatula
Ingredients

What goes in.

  • 1/2 cupfreshly squeezed lemon juice
  • 1 tbspfreshly grated lemon zest
  • 3/4 cupgranulated sugar
  • 3large eggs
  • 1large egg yolk
  • 6 tbspunsalted butter, cubed and chilled
The key technique

Control the coagulation

Keep the heat at medium-low and never stop whisking. When the mixture thickens enough to hold a clean line when you run your finger across the back of a coated spoon, it is ready to come off the heat.

Step by step

The method.

  1. Combine the aromatics and sugar

    Whisk the lemon juice, zest, sugar, eggs, and egg yolk in your saucepan until the mixture is uniform in color.

  2. Cook gently

    Place the pan over medium-low heat. Whisk continuously, paying close attention to the edges and the bottom of the pan to prevent the eggs from setting prematurely.

  3. Thicken

    Continue cooking for about 8–10 minutes. The mixture will transition from thin and foamy to opaque and velvety. Remove from heat the moment it coats your spatula thickly.

  4. Mount the butter

    Add the cold butter cubes one at a time, whisking constantly until each piece is fully incorporated before adding the next. This creates the final, glossy emulsion.

  5. Strain and chill

    Pour the curd through a fine-mesh sieve into a clean bowl. Press plastic wrap directly onto the surface to prevent a skin from forming, and chill until firm.

Variations

Other turns to take.

Lime or Grapefruit Curd

Swap the lemons for an equal amount of lime or grapefruit juice and zest. Use slightly more sugar for grapefruit to balance the natural bitterness.

Tips & troubleshooting

When it doesn't go to plan.

Tip

Use a stainless steel or glass pan; reactive metals like aluminum will give your curd a metallic tang.

Tip

Ensure your butter is cold when adding it at the end; it helps build the proper structure and shine.

Tip

If you accidentally scramble the eggs, immediately take the pan off the heat and whisk in a splash of heavy cream, then strain vigorously.

Questions

The ones that keep coming up.

How long does it stay fresh?

Kept in an airtight container in the refrigerator, it will hold its quality for up to one week.

Can I freeze it?

Yes, it freezes well for up to three months. Thaw it slowly in the refrigerator before using.

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