3 mushroom wine sau Recipes

well-trimmed 8- to 9-lb rib roast (with 4 bones ), crushed dried rosemary, divided, coarse kosher salt, fresh 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 sodium beef broth, dry red wine, fresh rosemary (for garnish )

white mushrooms stemmed, olive oil, kosher salt, freshly ground black pepper, red wine, granulated sugar, kosher salt, freshly ground black pepper, bay leaf, pearl onions peeled and trimmed, salted butter, chopped fresh thyme