For a fully cooked ham (which most store-bought, spiral-cut hams are), you’re aiming for 140°F (60°C). That’s it. That’s the whole ballgame. You’re just reheating it to a safe, succulent state—not trying to cook it from scratch like a raw chicken.
But if you bought a raw ham (you fearless pioneer, you), you need to hit 145°F (63°C) and then let it rest for three minutes. Yes, the government mandates a tiny nap for your piggy. Don’t skip it.
Think of it like this: 140°F is a warm hug for a fully cooked ham. 145°F is a slightly firmer, but still loving, embrace for a raw one. One degree > another degree = safety.
The Thermostat of Truth
Don’t trust the pop-up plastic thermometer that came with your ham. That thing is a liar. It’s the career politician of kitchen gadgets—vaguely accurate, but designed to make you overcook everything. Toss it.
Buy a decent instant-read digital thermometer. Stick it into the thickest part of the ham, avoiding the bone. The bone lies; it’s hotter and will trick you into thinking the whole ham is ready.
Insert it from the side, not the top. You want to hit the meaty center, not the fat cap. Probe like you mean it—gently, but with authority.
