3 horseradish standing rib roast gravy Recipes

standing rib roast (weight with bones), top fat trimmed, dry onion soup mix, freshly ground black pepper, rock salt, all-purpose flour, crushed dried rosemary, water , or more if needed, prepared horseradish , for serving, au jus gravy mix , for serving

olive oil, chopped shallots (3 large), garlic cloves, minced, irish whiskey, dry red wine, low-salt chicken broth, heavy whipping cream, dijon mustard, bone standing rib-eye roast (about 9 1/2 to 10 lb), chine bone removed, fat trimmed to 1/2 inch thick, garlic cloves, finely chopped, olive oil, chopped fresh rosemary, coarse kosher salt, coarsely ground black pepper, fennel seeds, crushed, black peppercorns , coarsely cracked in mortar with pestle or in resealable plastic bag with mallet, low-salt chicken broth, irish whiskey