Step 1

Boil the linguine for 8 mins. Three minutes before the time is up, tip in the prawns and peas. Reserve a cup of cooking water, then drain the pasta and return to the pan.

Step 2

Add the egg yolk, lemon zest and juice, most of the Parmesan and some soured cream, if you like. Stir everything together, adding a little of the pasta cooking water to loosen the mixture.

Step 3

Serve sprinkled with Parmesan.