They sound like international Kidney. When they are grown on Jersey in the channel Isles the become one of the finest "new" pots I have eaten.
This is where I get a bit anal. They are grown in south facing sloping cliff side field. Their feeding involves seaweed mulch.
So we went to Llandudno in the winter and collected some seaweed. We built a winter compost heap with it. I had two south facing "cold frames" one was my wifes, she grew strawbs in it. In march I built up the back of the soil to make a slope, planted and composted. The first horms we dug were shape like the Royal but the flavor was lacking so I let them grow on as a main crop. Hence the pic with the shoe. This is the cold frame below. I had more success creating the perfect baking potato from the seed Cara. A really true story of obsession and my wifes love of backing pots
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