This is the oldest Arran still available (1918) and it is rare. It is high yielding given a long growing season. The vivid blue/ purple skin contrasts with the bright white flesh. It is floury, very tasty and makes wonderful mash (the best!). The foliage is vigorous and weed suppressing. It was kept going in Northern Ireland and a corner of S.W. Scotland for decades until it was picked up in more recent times by some of the seed catalogue companies. Sourced from an organic farm.