Start the whole process of making curd by first sterilising the jars for the curd to go into at the end.
Always zest the lemons before juicing (trust me, it is not fun zested already juiced fruit!). Zest directly into the mixing bowl, so you get the zest but also the flavourful oils of the fruit too.
Allow the initial lemon mixture to cool down a little before adding in the eggs. It only needs a few minutes to cool, but it is definitely worth the wait not to have lemon flavoured scrambled eggs!
Once the eggs have been added, it is really important to keep whisking the lemon curd whilst heating it. If not whisked continuously, the curd will cook at the bottom of the bowl and end up being lumpy and not smooth and creamy.
Remember your lemon curd will continue to cook and thicken as it cools, so take it off the heat before it gets really thick. When ready, it will coat the back of a wooden spoon, and should not run back together if you pull a finger through it.
When the lemon curd has thickened, pour it straight into the sterilised jar. Screw the lid on tightly and leave it to cool on the side for a couple of hours. Once at room temperature, place the jar in the refrigerator and leave to cool completely for a few more hours before using and enjoying.