Add salt, cajun seasoning, jalapenos, and enough water to fill the pot 1-2 inches from the top.
Let the water boil 2-3 hours and add more water to keep water from completely boiling away.
When finished, top with water again and turn off the heat. Allow peanuts to cool for 15 minutes and enjoy!
Notes
The cooking time can vary greatly depending on how fresh the peanuts are. The fresher the peanut, the less time it will take to cook. When done, boiled peanuts should have a similar texture to a cooked dry bean. It should hold its shape, but not crunch when bitten. However, some people do prefer them to still have a slight crunch.