If you are working with fresh octopus, tenderize it first by beating it with a meat tenderizer. Before cooking frozen octopus, however, it must be completely defrosted.
[header] How to cook octopus [title] Thaw the octopus. [step] Frozen octopus can be thawed by sitting it in the refrigerator for roughly 24 hours. [substeps] Frozen octopus actually has an advantage over fresh octopus because the freezing process helps tenderize the meat.