What is the correct procedure for taking the temperature of sour cream?

Taking the temperature of sour cream involves ensuring that the thermometer accurately measures the temperature of the product itself. Placing the thermometer stem in the cream after removing the lid allows for a direct reading of the actual temperature of the sour cream. This method ensures that the thermometer is in contact with the product, providing an accurate measurement.

In contrast, inserting the thermometer through the lid would not give an accurate reading of the cream's temperature, as the thermometer would not be contacting the sour cream directly. Shaking the container before measurement is unnecessary and could lead to inconsistencies in temperature readings, as it does not directly relate to how the thermometer is used. Finally, using a digital thermometer without opening the container would likely result in a surface temperature reading rather than the temperature of the sour cream itself, which could be misleading. This highlights the importance of proper technique in ensuring food safety by obtaining accurate temperature readings.