1. Add the anchovies, garlic and a little of the oil to a small pot and gently warm through. Once the anchovies have dissolved into a paste, add the remaining oil and let it just come to a bubble. Off the heat, add the butter and stir through to melt and combine. Add plenty of pepper and some salt - even though the anchovies are salty, this sauce needs a good, salty punch.

Tip You can use this as a sauce for vegetable dishes or salads, or the traditional way, with fresh crudites, such as dutch carrots, soft lettuces, whole radishes, celery heart, fennel, lightly blanched beans or sugar snap peas, spring or salad onions.