Add the olive oil, vinegar, prunes, olives, capers and juice, bay leaves, garlic, oregano, and salt and pepper to a large bowl and mix well.
1/4 cup olive oil, 1/4 cup red wine vinegar, 1/2 cup pitted prunes, 1/4 cup pitted Spanish green olives, 1/4 cup capers with a bit of juice, 3 large bay leaves, ½-1 head of garlic, 1/8 cup dried oregano, Coarse salt and freshly ground black pepper