International Kidney are more commonly known as Jersey Royals, but they can only be called this when they are grown in the magical soil of Jersey. This gives them their special taste which they are renowned for. Classed as an early maincrop it can also be classed as an early due to the fact it is grown so early in some areas. Introduced in 1879, it is now considered to be a heritage variety that has stood the test of time and taste. Tubers are of a kidney shape with shallow eyes and white flesh and skin.