Yes, you can cook full meals using only a pressure cooker. With proper layering and timing, you can prepare complete dishes including grains, proteins, and vegetables simultaneously.
A pressure cooker works by creating a sealed environment where steam pressure builds, significantly raising the boiling point of water. This allows food to cook much faster than conventional methods. To cook a full meal, consider the cooking times of different ingredients. For example, if you're making a stew, you might layer tougher vegetables like potatoes and carrots at the bottom, add meat in the middle, and place quicker-cooking vegetables like broccoli or spinach on top. You can also use trivets or heat-safe bowls to separate ingredients and prevent them from overcooking. For instance, rice can be cooked in a bowl on a trivet above a stew. Remember to add enough liquid (water, broth, or sauce) to create steam, typically at least one cup. Experiment with different combinations and cooking times to find what works best for your preferences. Always release pressure safely, either naturally or with a quick release method, depending on the recipe.
When pressure cooking multiple ingredients, cut them into uniform sizes to ensure even cooking. This prevents some pieces from being overcooked while others are undercooked.