Is it safe to use aluminum foil facing in a pressure cooker?

Using aluminum foil facing in a pressure cooker is generally safe and is commonly used to prevent food from sticking to the pot. However, it's important to ensure that the foil does not block the pressure release valve or the vent, as this could lead to a buildup of pressure and potentially cause the cooker to malfunction. Always follow the manufacturer's guidelines for your specific pressure cooker model to avoid any safety issues.