If you wander through le sauce, you'll start to notice that I enjoy black olives a lot. I cook them with pasta, I eat them with eggs, and there's not much that separates the recipe below from the black olive tapenade I make. Except that a bagna cauda is just way more sultry than a tapenade. It's heady with garlic and it's very much about the luscious, flavoured oil that the garlic, and usually the anchovies, swim in. A tapenade, like other dips, may come together with a lot of oil, but it's not left loose and silky like this is.
Not being an eater of anchovies, I felt I was being left out of the bagna cauda party, so I replaced them with black olives in this recipe mostly for their saltiness. Really, this time, the olives are just a means to an end--a way to get me as close to bagna cauda as I can. And their inclusion makes this a less-than-authentic bagna cauda--I even roasted the garlic to mellow and sweeten it, where it's usually simmered on the stove. But it's my version of a vegetarian bagna cauda and it was absolutely devoured at the start of the last dinner party I hosted. Ok, fine, I associate with the kind of people that eat everything in sight to begin with, but this went particularly fast, even for us.