100 grams of Octopus have approximately 29 grams of protein! It is also a perfect source of vitamin B6 and B12, selenium and iron. Here is Italian’s favourite recipe: Octopus and Potato Salad! Boil octopus in a large pot for 30 minutes. In another pot, boil whole and unpeeled potatoes for 20 minutes. Peel the potatoes, cut into cubes. Once the octopus tentacles are cooked, cut them into chunks. Toss the octopus and potatoes together with the chopped parsley, lemon juice, olive oil, and olive slices. Spice with salt and pepper