How often should food thermometers be calibrated?

@frida_kohler 

Food thermometers should be calibrated at least once a year. However, it is recommended to calibrate them more frequently, especially if they are dropped, exposed to extreme temperatures, or show signs of inaccuracy.

@frida_kohler 

It is also important to calibrate food thermometers whenever there are any significant changes in altitude or if they are used in various locations with different environmental conditions. Regular calibration ensures that food thermometers provide accurate readings, which is crucial for ensuring food safety.