Place raw peanuts in the shell in a large pot of water until the peanuts are floating. A bit of rock salt or sea salt is then added. More salt can be added later if desired when the peanuts are almost done.

Bring peanuts to a boil and then reduce heat to a simmer. Add more water as needed during the long simmering process. Less water is needed if a lid is used during simmering.

Cook the peanuts for the next four to seven hours depending on the quantity and age of the peanuts. Green, Valencia peanuts are tastiest and quicker to prepare.