Using substantial amounts of oil or oily liquids in a pressure cooker is generally discouraged for safety reasons. The concern lies in the potential risks and hazards that can arise when cooking with excessive oil or oily substances in a sealed, high-pressure environment. Here are some reasons why substantial amounts of oil should never be used in a pressure cooker:
Safety Hazard: Pressure cookers work by creating airtight and pressurized conditions inside the cooking pot. When there is a substantial amount of oil, it can lead to excessive steam generation, which can cause the pressure to rise to dangerous levels. This could result in the pressure cooker malfunctioning, releasing steam uncontrollably, or even exploding, leading to serious injuries or damage.
Clogging the Pressure Release Valve: Pressure cookers are equipped with pressure release valves that regulate the internal pressure and prevent it from getting too high. Excessive oil or oily liquids can clog the pressure release valve, preventing it from functioning correctly. This can cause the pressure to build up to unsafe levels and pose a risk of the pressure cooker bursting open.
Food Can Burn and Stick: Oily substances can cause the food to burn or stick to the bottom of the pressure cooker, especially if there's not enough liquid to create the necessary steam for cooking. Burnt or stuck food can affect the performance of the pressure cooker and may make it challenging to clean.
Difficulty in Releasing Pressure: When cooking with a substantial amount of oil or oily liquids, it may be more challenging to release pressure quickly and safely after cooking. The oil can create a barrier that traps steam, making it harder for the pressure to release naturally.
To use a pressure cooker safely and effectively, it's essential to follow the manufacturer's guidelines and recommended recipes. Most pressure cooker manuals provide specific instructions on the maximum amount of oil or fats that can be used for safe operation.
When using a pressure cooker, it's best to use moderate amounts of oil and include enough liquid or water to generate the necessary steam for cooking. By doing so, you can avoid potential hazards and ensure that your pressure cooker operates safely and efficiently.