Chop the anchovies very finely, as well as the garlic. If you want to eat the sauce quickly, it is worth mashing the garlic with a fork. Finely grate the carrot.
Then mix everything together and mash with a fork. Depending on how salty the pickled anchovies were, you only use the oil in which they were pickled and no extra salt. Anchovies with little salt need to be salted a little, but these fish also taste different of course.
We usually eat the sauce on a grainy black bread that I bake myself. A firm, spicy, moist bread is suitable and provides a good contrast to the rich, fresh sauce.