- Prep Time: 10 minutes
- Cook Time: 12 minutes
- Chilling Time: 2 hours
- Total Time: 2 hours 22 minutes
- Yield: Approximately 1.5 cups (12 servings, 2 tbsp per serving)
- Difficulty Level: Easy to Intermediate
Equipment Needed
- Heavy-bottomed saucepan or double boiler
- Stainless steel or silicone whisk
- Fine-mesh sieve
- Glass jar or airtight container
- Plastic wrap
- Fine citrus zester or microplane
Ingredients
- 4 large egg yolks (room temperature)
- 2 large whole eggs (room temperature)
- ¾ cup (150g) granulated sugar
- ½ cup (120ml) freshly squeezed lemon juice (from about 3–4 medium lemons)
- 1 tablespoon freshly grated lemon zest (finely grated, yellow zest only)
- ½ cup (115g) unsalted butter, cold and cut into 8 equal cubes
- 1 pinch fine sea salt
Step-by-Step Instructions
Step 1: Prep the Citrus and Zest
Wash and dry your lemons thoroughly. Using a fine microplane or zester, zest the lemons until you have 1 tablespoon of finely grated zest. Ensure you only grate the outermost yellow layer; avoid the bitter white pith beneath. Juice the lemons until you yield exactly ½ cup of fresh juice. Strain out any seeds.
Step 2: Combine Eggs, Sugar, and Citrus
In a medium, heavy-bottomed saucepan (off the heat), combine the 4 egg yolks, 2 whole eggs, and ¾ cup of granulated sugar. Whisk vigorously for about 1 minute until the mixture turns pale yellow and smooth. Whisk in the ½ cup of fresh lemon juice, 1 tablespoon of lemon zest, and 1 pinch of fine sea salt until fully incorporated.
Step 3: Cook on Low Heat with Gentle Intensity
Place the saucepan on the stovetop over Low to Medium-Low heat intensity.
Whisk continuously across the bottom and sides of the pan to prevent the eggs from scorching or curdling. Maintain a gentle heat intensity—do not allow the mixture to boil or bubble rapidly.
Cook for 8 to 12 minutes. As the butter-free mixture heats, it will gradually thicken. The lemon curd is ready when it reaches a thick, custard-like consistency that coats the back of a spoon (or reaches approximately 170°F / 77°C on an instant-read thermometer).
Step 4: Emulsify with Cold Butter
Remove the saucepan from the heat immediately. Add the cold, cubed butter one piece at a time, whisking constantly after each addition until fully melted and integrated before adding the next piece. The cold butter stops the cooking process and emulsifies the curd, creating a silky, glossy texture.
Step 5: Strain for Maximum Smoothness
Set a fine-mesh sieve over a clean glass bowl or jar. Pour the hot lemon curd through the strainer, using a silicone spatula to gently press the curd through while leaving behind any stray bits of cooked egg or dense zest.
Step 6: Chill and Set
Cover the surface of the warm lemon curd directly with plastic wrap (pressing it down gently onto the top of the curd to prevent a skin from forming). Place the bowl or jar in the refrigerator to chill for at least 2 hours until fully set and cooled.
Cooking Intensity & Temperature Guide
| Stage | Heat Level | Duration | Target Indicator |
| Whisking Base | Off Heat | 1 min | Pale yellow, unified liquid |
| Thickening Stage | Low to Medium-Low | 8–12 mins | Steam rises; coats the back of a spoon ($170^\circ\text{F} / 77^\circ\text{C}$) |
| Emulsification | Off Heat | 2 mins | Butter fully incorporated, glossy sheen |
| Cooling & Setting | Refrigerated ($38^\circ\text{F} / 3^\circ\text{C}$) | 2 hours | Firm, spreadable custard consistency |
Chef’s Tips for Success
- Use Fresh Lemons Only: Bottled lemon juice lacks the bright acidity and natural oils required for a clean, vibrant flavor profile. Freshly squeezed juice makes a critical difference.
- Avoid Reactive Cookware: Always use non-reactive cookware (stainless steel, enamel-coated, or glass). Aluminum or unlined copper pans react with the citric acid, causing a metallic off-flavor and a dull grayish discoloration.
- Patience Over High Heat: Never crank up the heat intensity to speed up the thickening process. High heat will scramble the eggs, leading to a lumpy texture. Gentle, low heat ensures a smooth egg protein structure.
- Rescuing Scrambled Curd: If your heat accidentally spiked and small bits of egg formed, immediately pass the mixture through a fine-mesh sieve into a cold bowl and blend with an immersion blender for 30 seconds to restore smooth texture.
Storage, Shelf Life, and Freezing
- Refrigeration: Store lemon curd in an airtight glass jar in the refrigerator. It remains fresh and retains optimal flavor for up to 2 weeks.
- Freezing: Lemon curd freezes exceptionally well. Pour the cooled curd into a freezer-safe container or container jar, leaving ½ inch of headspace for expansion. Freeze for up to 3 to 6 months. Thaw overnight in the refrigerator before using; stir gently to re-emulsify if slight separation occurs.
Suggested Uses & Pairings
- Pastry & Baking: Fill tart shells, macaron shells, crepes, or layer between sponge cakes.
- Breakfast Spread: Spread over toasted brioche, pancakes, waffles, scones, or buttermilk biscuits.
- Yogurt & Oatmeal: Swirl a tablespoon into Greek yogurt, chia seed pudding, or overnight oats.
- Dessert Topping: Spoon over vanilla bean ice cream, cheesecake, or pavlova.
Nutritional Information
Serving Size: 2 tablespoons (approx. 32g)
Servings Per Recipe: 12
| Nutrient | Amount Per Serving | % Daily Value* |
| Calories | 110 kcal | — |
| Total Fat | 8g | 10% |
| Saturated Fat | 4.5g | 23% |
| Trans Fat | 0g | — |
| Cholesterol | 80mg | 27% |
| Sodium | 25mg | 1% |
| Total Carbohydrate | 13g | 5% |
| Dietary Fiber | 0g | 0% |
| Total Sugars | 13g | — |
| Includes Added Sugars | 12.5g | 25% |
| Protein | 1.5g | 3% |
| Vitamin D | 0.4mcg | 2% |
| Calcium | 10mg | 1% |
| Iron | 0.3mg | 2% |
| Potassium | 20mg | 0% |