LifestyleTuna with Onions on Madeira04:10This browser does not support the video element.Lifestyle10/08/2013October 8, 2013Portugal's picturesque island of Madeira lives largely from tourism. We pay a visit to try some of the local dishes and sample a very special delicacy: grilled tuna steaks with polenta croutons and stewed peppers and onions.Copy linkAdvertisement