3 rosemary beef rib roast porcini Recipes

well-trimmed 8- to 9-lb rib roast (with 4 bones ), crushed dried rosemary, divided, coarse kosher salt, freshly ground black pepper, olive oil, boiling water, dried porcini mushrooms, butter, room temperature, divided, fresh button mushrooms , cut into 1/4-inch-thick slices, garlic cloves, minced, all purpose flour, low-salt beef broth, dry red wine, fresh rosemary (for garnish )

fresh rosemary, coarsely chopped, fresh ground black pepper, vegetable oil, standing rib roast (6 ribs), kosher salt, unsalted butter, shallot, minced, garlic cloves, sliced thin, dry red wine, beef stock or 1 quart beef broth, sherry wine vinegar, fresh thyme sprigs, dried porcini mushrooms, ground to a powder (1 cup)