Remove the carton and the label from the container. Without opening or piercing the tray, cook the octopus in a bain-marie for 8 minutes.
Open the container, cut the octopus legs into slices of approximately ½ cm.
In a casserole with plenty of salted water, cook the potatoes for 30 minutes. Peel the potatoes and cut them into slices of approximately ½ cm.