When using a probe thermometer you should insert it into the thickest part of the food, wait for the temperature to stabilize, and clean and sanitize the probe before and after each use for food safety.

Basic use steps

  • Insert the probe into the thickest part or the center of the food, avoiding bones, fat, or gristle.
  • For liquids like soups or stews, stir first so the heat is evenly distributed, then insert the probe into the middle of the pot.
  • Wait at least about 15 seconds (or until the reading stops changing) before deciding if the food has reached a safe temperature.

Getting accurate readings

  • Make sure the probe tip is fully in the food, not just barely touching the surface.
  • Do not let the probe touch the bottom or sides of the pan or tray, as this can give a falsely high reading from the hot metal.
  • If the item is very thick or irregular (like a roast), check in a couple of spots to ensure the whole piece has reached a safe temperature.

Cleaning and sanitizing

  • After measuring, remove the probe and wash it with warm water and soap to get rid of visible food residue.
  • Sanitize the metal stem using alcohol wipes or a mild bleach solution (for example, about 1/2 teaspoon of unscented bleach in 1 liter of water) to prevent cross‑contamination between foods.
  • Let the probe air‑dry or use a clean disposable towel; avoid abrasive pads that might damage the surface or sensor area.

Calibration and care

  • Periodically check accuracy using ice water: the thermometer should read close to 0°C (32°F); if it doesn’t and your model allows it, adjust it while it is still in the ice bath.
  • Some digital probes cannot be calibrated, so follow the manufacturer’s instructions and replace the thermometer if it consistently reads outside safe ranges.
  • Avoid exposing cables and probe transitions to direct flames or very hot metal surfaces, which can damage the sensor and cause failures.

TL;DR: When using a probe thermometer you should put the tip into the thickest part of the food (not touching bone or pan), wait for a steady reading, and always clean and sanitize the probe between uses to keep temperatures accurate and food safe.

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