Robert Fenn was a potato breeder who released a number of good quality potatoes through Suttons, but only one, International Kidney, has lasted commercially. This is the famous Jersey Royal.
It was introduced around 1880 and is the potato which Jersey exports. It is an excellent variety when immature, and this is when it is harvested. It has a creamy white flesh, distinctive flavour, white skin, and waxy, firm texture.
Grown to maturity it is a maincrop variety, 'kidney' shaped, much more floury; it will disintegrate when cooked, and it will produce a reasonable quality mash.
Grown in England (or to maturity) the distinctive flavour is lost.
THE JERSEY ROYAL (INTERNATIONAL KIDNEY)
Pictures (click on small images for detail):
ND / Diversity website
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