Make a foil parcel and place a seasoned cod fillet on a bed of spinach.
Bake at 180C/350F/160FAN/Gas4 for 10-20 minutes.
To make the sauce set up a bain marie with the egg yolks, seasoning, 1 teaspoon of lemon and a knob of butter.
Whisk over heat for about 2 minutes, or until the mixture has thickened.
Take the bowl off the heat and whisk in the remaining butter gradually with the lemon and basil.
Keep warm over the bain marie and just before serving fold in the cream.
Disclaimer:The nutritional information provided is approximate and is calculated using online tools. Information can vary depending on various factors, but we have endeavoured to be as accurate as possible.