Soft And Moist Stewed Octopus Sous Vide – Japanese Cooking Put all the ingredients of seasonings into a pan then put it on fire. Bring it to a boil, then rest to cool. Set BONIQ to 40℃ for 30 mins. Pat the octopus to soften with something hard like rolling pin. Put the octopus, seasoning liquid and sugar free carbonated water in a freezer bag and vacuum seal it. When BONIQ Sous Vide Cooker reaches the target temperature, submerge the freezer bag into the hot water and start sous vide cooking. When the timer beeps, remove the freezer bag. Dish up the octopus then pour the remaining soup in the bag to finish.