Pressure cooking is a method of cooking food using a sealed pot that traps steam, creating high pressure. This high pressure raises the boiling point of water, allowing food to cook faster than traditional methods. It is commonly used for preparing meals like stews, beans, and grains, making it a popular choice for busy cooks. The pressure cooker consists of a pot with a locking lid and a pressure release valve. When heated, steam builds up inside the pot, which helps to tenderize tough cuts of meat and infuse flavors more effectively. This cooking technique is energy-efficient and can help retain nutrients in food.