How long does it take fat from a steak to decompose?

The decomposition rate of fat from a steak depends on various factors such as temperature, humidity, and the presence of microorganisms. Generally, in typical room temperature conditions (around 20-25°C), it can take several days to weeks for the fat to decompose significantly. However, in warmer and humid environments, decomposition can occur more rapidly, while in cold environments, it can be slowed down. Additionally, the presence of enzymes from bacteria and other microorganisms can accelerate the breakdown of fat.