Cook corned beef brisket low and slow until the internal temperature is about 190–205°F (88–96°C) for tender, sliceable meat, regardless of whether you simmer, bake, or smoke it.

Quick Scoop

  • Food safety minimum: Corned beef is technically safe at 145°F internal, but it will still be quite tough because brisket is a very collagen‑rich cut.
  • Best tenderness range:
    • Sliceable and tender: 190–195°F internal.
* Very tender / falling apart: **200–205°F** internal.
  • Stovetop simmer:
    • Keep the cooking liquid at a gentle simmer around 190–195°F , not a hard boil, until the inside of the meat hits that 190–205°F zone.
  • Oven‑braised:
    • Common approach is baking at around 300–325°F oven temperature until the brisket reaches about 190°F internal and is fork‑tender.
  • Smoked corned beef (pastrami‑style):
    • Smoke around 225–250°F grill temperature.
    • Often wrapped partway through, then cooked until about 200–203°F internal for optimal tenderness.

Simple game plan (example)

  1. Bring the corned beef to room temp for 20–30 minutes (from the fridge).
  2. Cook in gently simmering water (or broth/beer mix) around 190–195°F, or in a 300–325°F oven covered with liquid in the pan.
  1. Check with an instant‑read thermometer; keep going until the thickest part is at least 190°F , up to about 205°F depending how soft you like it.
  1. Let it rest 10–20 minutes before slicing across the grain so it stays juicy and tender.

If you tell me your method (boiling, oven, slow cooker, smoker), I can give you more specific temps and timing for that exact approach.

Information gathered from public forums or data available on the internet and portrayed here.