Lemon Curd Perfection - 5 Mistakes to Avoid While Making Lemon Curd

Written by Garima Johar | November 27, 2023

You followed the recipe. You whisked, you stirred, you waited for that golden, glossy curd to come together, and instead you got scrambled eggs floating in sour lemon water. If this sounds familiar, you’re not alone. While lemon curd is a versatile yet easy spread that you can make with 4-5 ingredients, there are some common mistakes that you should avoid to make the perfect lemon curd every time.

Once you get the hang of the recipe, you’ll realize that homemade lemon curd is a tangy, creamy, and silky spread that you can use in various ways. From spreading it on top of your breakfast toast to using it as a filling for your cakes or cupcakes, topping them off, making lemon bars, or putting it in lemon pies, a simple lemon curd goes a long way.

You only need a few ingredients, which you most likely already have in your kitchen, when it comes to making your own lemon curd. Although it is relatively simple, it can be tricky if you are just starting out or aren't familiar with the spread. To ensure you get the best lemon curd every single time, you must avoid these common mistakes and become a pro at making this famous fruit curd.

Why Lemon Curd Goes Wrong and How to Fix It

Lemon curd is essentially a type of custard. Made with a mix of eggs, sugar, and acid, the texture majorly depends on the egg proteins. Since the proteins can curdle or make the texture grainy if you cook at a high temperature or skip a step, read on to know some of the most common mistakes and tips to avoid them.

Using Insufficient Egg Yolks

Eggs are an important component of lemon curd, but yolks are valued more than egg whites when it comes to making lemon curd. Lemon curd has traces of yellow in it naturally, but its striking golden color comes from the yolks.

Also, incorporating whole eggs is not preferred since the egg whites cause the lemon curd to become lighter. The egg whites also carry an unpleasant smell due to sulfur, which is even more pronounced in older eggs. So always make sure you use the freshest eggs. Adding more yolks will result in a thicker and richer lemon curd.

Prepping The Lemons Incorrectly

Don't use a cheese grater to extract the lemon zest, as it will cause the pith to be discarded. The pith has a bitter and unpleasant taste, which could cause a negative change in flavor in your lemon curd. Use a microplane zester instead, as it is the most effective way to get the lemon zest.

Juicing The Lemons Straightaway

Another serious mistake many people make is starting to juice the lemons immediately after zesting them. Although it is not bad, you should microwave your lemons for about 10-20 seconds. This makes your lemons softer and much easier to juice. Not just that, microwaving them also leads to getting more juice, whether you juice it with your hands or by using a gadget.

Overcooking The Curd

Your lemon curd could get chunky and grainy if you let it overcook. One thing to remember when making lemon curd is never let it reach a point where it starts boiling. The ideal temperature for lemon curd is 170 degrees Fahrenheit, and it shouldn't cross that. Especially when you are using a double boiler, the chances of overcooking the lemon curd are quite high, so be careful to get the best results.

Pro Tips for Perfect Lemon Curd Every Time

• Use fresh lemon juice, as a packaged bottle sometimes has a metallic flavor. Freshly squeezed lemon juice has a higher acidity, which helps the eggs to set properly. Also, zest the lemons before juicing for a stronger flavor.

• Remember to stir continuously as lemon curd needs near-constant motion while it cooks. Whisking the mixture evenly distributes the heat and avoids curdling.

• Use a heavy-bottomed pan, as the one with a light base heats unevenly, creating hot spots that scorch the eggs. You can also use a double boiler to get more control and a wider margin for error while the curd thickens.

• Maintain controlled heat. Inconsistently managed temperature is what ruins the lemon curd. So, it’s necessary to keep the flame to a low to medium temperature throughout the cooking process.