Clean octopus. I cut off the head, remove the beak, and cut into 8 leg pieces. You can clean and cook head as well. I choose not to.
Place all octopus ingredients into a pressure cooker. Bring to high pressure and cook for 10 minutes. Let cooker cool naturally.
Combine all marinade ingredients. Add octopus cut into serving size pieces. Marinate for an hour or more.
Grill on pre-heated oiled pan to > 400 (high heat) till charred to your tastes, about 3 minutes per side. I find that the marinade provides sufficient oil for grill.
Serve drizzled with reserved marinade.