Dan Lepard's easy lemon curd

• 5 large egg yolks
• 1 large egg
• 3 lemons
• 125g lemon juice
• 150g caster sugar
• 225g unsalted butter
• 125g icing sugar

Step 1
Have ready a large sieve placed over a clean mixing bowl.

Step 2
In a saucepan, whisk the yolks, whole egg, lemon zest and juice with the sugar until evenly combined, then add the butter.

Step 3
Bring to the first plop of a boil, stirring all the time across the base of the pan to check it isn't sticking, then quickly spoon the mixture into the sieve and press through with the wooden spoon to remove the zest.

Step 4
Cover and leave until cold before using.