Step-by-step cooking method Peel and finely slice the potatoes in a microwavable bowl. Add a little salt and oil and mix to permeate the potatoes fully. Cook the potatoes in the microwave at high power for 5 minutes. Wrap the potatoes in aluminium foil and cook in the fryer. Remove them when they are ready. Spray the octopus with a little oil and cook in the air fryer. Mix the octopus and potatoes to serve with a little oil and paprika on top.