If the octopus has not been pre-tenderized, you can do this by gently pounding it with a meat mallet or by freezing and then thawing it, which helps break down the muscle fibers.
In a large bowl, combine the vegetable oil, minced garlic, grated ginger, chopped chilies (if using), soy sauce, lime juice, and honey.
Add the octopus to the marinade, ensuring it is well-coated.
Cover and refrigerate for at least 1 hour, or preferably overnight, to allow the flavors to meld.
Preheat your grill to medium-high heat.
Remove the octopus from the marinade and let any excess marinade drip off.
Grill the octopus for about 3-4 minutes on each side, or until it is charred and cooked through. Be careful not to overcook, as octopus can become tough.
Transfer the grilled octopus to a serving plate.
Garnish with fresh chopped cilantro and lime wedges on the side.
Enjoy your meal!