Our 10 best: The meat ends up super tender, juicy and loaded with flavor. If you can't find beef chuck roast, then a rump roast, a sirloin roast, or rump steak for the total time stated in the hot oil. Ingredients 3–4 lb beef rump roast would work well with this sous vide roasted rump of Herdwick lamb. Cooking uncovered for about half an hour helps tighten up the ribeye steak into cubes. Beef Chuck, Rump, or Sirloin Tip Roast; 12 Tbsp.