Rinse the octopus thoroughly under cold running water to remove any sand or debris
Bring a large pot of unsalted water to a rolling boil
Submerge the whole octopus in the boiling water for 1 minute, then remove and drain
In a clean pot, combine enough water to cover the octopus, 3 oz red wine vinegar, and the crushed garlic clove
Add the octopus to the pot and simmer very gently over low heat, covered, for 60–75 minutes until fork-tender
While the octopus cooks, combine 1 tablespoon oregano with a drizzle of olive oil and a splash of red wine vinegar in a small bowl to make a basic marinade
Once tender, remove octopus from cooking liquid and let it cool to room temperature
Cut the octopus into bite-sized chunks or 3–4 inch tentacle sections, as preferred for serving
Place octopus pieces in a shallow dish and pour the marinade evenly over them, ensuring pieces are coated
Cover and refrigerate for at least 30 minutes, allowing flavors to meld; longer is fine for a deeper flavor
Just before serving, drizzle with extra olive oil and an additional sprinkle of oregano if desired
Serve chilled or at cool room temperature, as typical for Greek meze
Arrange the octopus attractively on a platter with lemon wedges and fresh parsley if available
Suggest serving with crusty bread or alongside other meze like olives and feta
Each instruction is atomic and independent, with clear opportunities for parallel steps (such as mixing marinade while octopus simmers).
Strict adherence to ingredients and nutritional intent, plus plating/serving guidance as requested.
Flows logically and is user-friendly for both home cooks and professionals.]