100gbutter(unsalted, small cubes, room temperature)
INSTRUCTIONS
Gather all the ingredients.
Place the canning jar into the oven at 120ºC/250ºF for at least 10 minutes.
Add all the ingredients except the butter into a mini food processor and process until well combined and creamy.
Cut the butter into small cubes. Set aside.
Add all the ingredients except the butter into a mini food processor and process until well combined and creamy (Note 1)
Pour the mixture into a non-reactive saucepan and cook over medium heat, constantly stirring, for about 10 minutes. Add butter incrementally, one cube at a time. Add another cube of butter only once the previous one has been fully incorporated into the mixture.
Once the lemon curd reaches about 166ºF, it has a thick consistency, and it coats the back of the spoon; it is cooked.Ladle the hot lemon curd in the sterilized jar, remove any air bubbles, close and let cool to room temperature before putting it in the refrigerator.
NOTES
Alternatively, you can whisk the ingredients until well combined.
Instead of using a non-reactive saucepan, you can also cook the lemon curd in a glass or ceramic bowl over a pot of boiling water. Make sure the boiling water is not touching the glass/ceramic bowl.