Perfectly Cooked Boiled Octopus Recipe
Fill a pot large enough to hold the octopus with the octopus and enough cold water to cover. Set over high heat. Bring water to a simmer, then lower heat to maintain simmer. Cook until octopus is tender enough that you can pierce the thick part of a tentacle with a paring knife with little resistance, about 1 hour; keep in mind that this time is a rough estimate, and the octopus may be done sooner or it may take longer, but it will get there.