Rosemary Rib Roast with Creamy Gremolata

Name: Rosemary Rib Roast with Creamy Gremolata
Ingredients: One 6- to 7-pound beef prime rib roast (3 bones); 1 tablespoon kosher salt; 1 tablespoon (7 grams) finely chopped fresh rosemary; 2 teaspoons freshly ground black pepper; 2 cloves garlic, very finely chopped; 2 tablespoons (30 grams) extra-virgin olive oil; 2 tablespoons (30 grams) neutral oil; Flaky salt, for serving; Creamy Gremolata, recipe follows; 2 cups (22 grams) loosely packed fresh Italian parsley leaves, chopped; 1/2 cup mayonnaise; 1/4 cup (10 grams) chopped chives; 2 tablespoons (11 grams) prepared horseradish; Finely grated zest of 1 lemon; Kosher salt and freshly ground black pepper