Rinse and strain raw in-shell peanuts. In a large pot (at least 8 quart capacity), dissolve salt in water. Add peanuts. Bring mixture to a boil. Reduce to simmer and cover pot. Allow to simmer for 3-4 hours depending on desired consistency. After 3 hours, taste on peanut to determine if additional cooking time is needed. Stain peanuts. Enjoy immediately, or keep stored in the fridge for up to 5 days.