This is one of the loveliest cold sauces to put over thin slices of cold chicken, turkey, veal or roasted red peppers. The lovely tuna flavor with the capers is really special and it’s very silky.

2 large egg yolks, at room temperature
Sea salt
2 1/4 cups extra virgin olive oil
5 tbsp freshly squeezed lemon juice
1 7oz can good quality tuna packed in oil
5 anchovy fillets
3 tbsp capers, drained

For garnish
extra capers, thin slices lemon, pitted black olives, parsley leaves or anchovy fillets.

In a large bowl, whisk together the egg yolks and 1/4 tsp salt until pale yellow and the consistency of cream.
Beginning a drop at a time, add 1 1/4 cups olive oil, whisking continually.
As the mixture thickens, you can add the oil a little quicker. When it gets quite thick, whisk in 1 tbsp lemon juice.
Continue adding the oil until the whole 1 1/4 cups has been absorbed and the mayonnaise is quite thick and shiny.
Whisk in another tbsp of lemon juice.

Drain the tuna and put it in a food processor with the anchovies, remaining cup of olive oil, remaining lemon juice and capers.
Process until you get a creamy uniformly blended sauce.
Scrape the sauce into a bowl with the mayonnaise and fold to combine.
Taste for seasoning. It should be tangy and highly seasoned.
Refrigerate until needed