Start by examining your raw peanuts and removing any bad ones, pieces of shell, or debris. Rinse the peanuts thoroughly under cold water. For best results, soak them in room temperature water for about 30 minutes, then drain completely.

Place the cleaned peanuts in your electric pressure cooker and sprinkle the salt evenly over the top of the peanuts. This helps ensure even seasoning distribution throughout the cooking process. Add the first portion of water to your Instant Pot and secure the lid according to the manufacturer's instructions. Make sure your pressure valve is set to the sealing position.

Set your Instant Pot to high pressure and cook for 40 minutes. When the first cooking cycle is complete, perform a quick release to safely open the pot. Carefully test one peanut to check the texture and saltiness level - this helps you determine the remaining cooking time needed.

Stir the peanuts well, bringing those from the bottom to the top for even cooking. Add the remaining water and additional salt if desired for a saltier flavor. Based on your taste test, cook for another 20-40 minutes on high pressure. If you prefer very soft peanuts, go with the longer cooking time. After the second cycle, use natural pressure release for about 10 minutes, then quick release any remaining pressure.

Drain the excess cooking liquid and let them cool slightly before serving. The peanuts will continue to absorb flavors as they cool to room temperature.