A meat thermometer is the single most useful tool in any griller’s kit. It removes the guesswork from doneness, prevents foodborne illness, and stops you from overcooking expensive cuts. Yet many cooks either do not own one or do not know how to use it properly. Here is everything you need to know.
Types of Thermometers
- Instant-read digital: Takes a reading in 2–5 seconds. Best for spot-checking. Not designed to stay in the grill during cooking.
- Leave-in probe: Stays inserted during the entire cook. Ideal for long cooks like brisket or whole birds. The display unit sits outside the grill.
- Wireless Bluetooth/Wi-Fi: Sends readings to your phone. Convenient for overnight smokes or long roasts when you want to step away.
For most home grilling, a quality instant-read thermometer in the $20–$50 range is sufficient. The Thermapen and ThermoPop are consistently recommended by food scientists for their speed and accuracy.
Where to Insert the Probe
Insert the probe into the thickest part of the meat, away from bone, fat, and gristle — all of which conduct heat differently than muscle and will give a false reading. For a thick steak, insert from the side so the probe tip sits in the center of the thickest section. For a whole chicken, check the innermost part of the thigh near the joint without touching the bone.
USDA Safe Temperatures at a Glance
- Poultry (all types): 165°F (74°C) — USDA recommendation
- Whole beef, pork, veal, lamb cuts: 145°F (63°C) with 3-minute rest — USDA recommendation
- Ground beef, pork, veal, lamb: 160°F (71°C) — USDA recommendation
- Fish and shellfish: 145°F (63°C) — USDA recommendation
Calibrating Your Thermometer
Check calibration regularly by placing the probe in ice water — a reading of 32°F (0°C) confirms accuracy. If your thermometer has an offset adjustment feature, correct it there. If not, factor the offset into your readings. Replace any thermometer that cannot be calibrated back to within 2°F of the correct temperature.
Cleaning and Care
Wipe the probe with a sanitizing wipe or wash with warm soapy water after each use. Never submerge the display unit unless it is rated waterproof. Store probes so they do not bend or get pinched, which can damage the internal sensor.