Prime Rib Roast with Salsa Verde

Name: Prime Rib Roast with Salsa Verde
Ingredients: 1 Cup extra virgin olive oil; 2 Tablespoons capers, rinsed; 3 Tablespoons cornichon pickles, roughly chopped; 3 garlic cloves; 1 shallot, peeled and roughly chopped; 1 bunch Italian flat leaf parsley, roughly chopped; 1 Tablespoon hot sauce, such as Tabasco Green Jalapeño Sauce; 1 six-pound boneless prime rib roast; 2 1/2 red bliss potatoes, halved; 5 Tablespoons olive oil, divided; 5 Teaspoons kosher salt, divided; 2 Teaspoons fresh cracked black pepper, divided