Hi Donna,
You are simmering the octopus in the wine-vinegar-oil mixture (no water added), though you could add a splash of water and it won’t negatively impact the recipe. You are doing this step to tenderize the meat and reduce bitterness. You only need to add water if the liquid evaporates because you don’t want the octopus drying out. I really hope your kids love this!

Hi,I want to make this , but I only have a 2lb octopus, so in the wine n vinegar, 1 cup total with seasonings, is that 1 cup total the only liquid? or do you add water with it, or is the water only added if it evaporates? thank want to impress my kids lol with an Appetizer

I know what you mean Joy. Octopus can be intimidating at first. I wish more people knew how easy and rewarding it can be. Thanks for the feedback and so happy you liked it!