What is the maximum temperature achieved in a pressure cooker?

In a pressure cooker, the maximum temperature achievable is primarily governed by the increase in pressure created within the sealed environment. Under normal atmospheric pressure, water boils at 100 degrees Celsius. However, a pressure cooker operates by sealing in steam, which raises the internal pressure.

As the pressure increases, the boiling point of water also increases. When a pressure cooker reaches a typical operational pressure of about 15 psi (pounds per square inch) above atmospheric pressure, the internal temperature can reach up to approximately 121 degrees Celsius. This elevated temperature is critical as it allows for faster cooking and can also enhance the softening of foods and the development of flavors.

While temperatures higher than 121 degrees Celsius can be achieved in specialized equipment or at different pressures, the standard maximum for typical home pressure cookers aligns with this figure, making 121 degrees Celsius the correct choice. Other temperature options would not reflect the common limits experienced in standard pressure cooking practices.