What To Do If Lemon Curd Does Not Thicken?
If your lemon curd does not thicken, there are a few things you can try. First, check the temperature of the mixture to ensure it has reached 170°F. If it hasn’t, continue cooking until it does. If the mixture has reached the temperature, try adding a teaspoon of cornstarch or flour to help thicken it. Additionally, make sure you are using enough egg yolks and sugar as they help with the thickening process. If all else fails, refrigerate the mixture for a few hours, which may help it thicken up.