1. It cooks food much faster. A pressure cooker can complete the cooking process about 30% faster than conventional cooking methods. 2. It saves energy. Because of the shortened cooking times, pressure cooking takes less energy to complete a meal as well. 3. It retains more nutrients. Foods that are cooked within a pressure cooker maintain more of their vitamins and minerals compared to foods that are boiled. For that reason, many foods that come out of a pressure cooker are said to taste better. 4. It can be used at any altitude. Water boils at lower temperatures at higher elevations. A pressure cooker can create a stable atmosphere with its unique design, allowing for constant and precise pressures to be used for cooking. That creates faster and more consistent results.