Common Terminology in Food Industry

A standardized energy (heat) measurement. A BTU is defined as the amount of energy required to heat one pound of water 1 degree Fahrenheit.

Example: Assume you want to chill a pound of meat from 90oF down to 35oF. Your change in temperature is 55oF, but in order to effect that temperature change, you need to remove 45 BTUs of heat from the meat.