To showcase deeply flavorful grass-fed beef, butcher-shop owners Jessica and Josh Applestone make a simple roast beef using any number of cuts, including rib loin (prime rib), top round, or a tied sirloin tip. The roast — deliciously crusted with horseradish and black peppercorns — is perfect hot out of the oven, but it's also amazing cold on a sandwich: Thinly slice the roast beef and serve it on white bread with horseradish mayonnaise and juicy tomatoes.