This is for anchovy lovers-and we are, so we make a lot. Don't be tempted to halve the recipe: Mashing anchovies takes time and, anyway, there are any number of wonderful ways to use this. Besides salads, spoon it over boiled potatoes, roasted vegetables, steak or roast beef sandwiches, croutons (before you toast them), or reheated pizza.
In a medium bowl, mash the anchovy fillets with a fork. Add the salt, oregano, and Roasted Garlic, and stir until the mixture forms a paste.
Pour in the olive oil in a stream, whisking constantly, until all the oil has been added. Whisk in the vinegar and capers. Keeps, covered, in the refrigerator for 1 week.