King Charles loves jacket potatoes – and his favourite spud is a Duke of YorkKing Charles, 77, revealed that his favourite type of potato is the Duke of York, named after his shamed brother. He said they're 'very good' because of their crispy skinsView 3 Images (Image: AFP via Getty Images)King Charles has revealed he’s a huge jacket potato fan and his favourite type of spud is named after his estranged shamed brother. ‌The monarch recommended the Duke of York as a good choice of potato for baking in a new documentary about his love of nature. Made in collaboration with his King’s Foundation charity, it looks at his decades-long campaigning to protect the natural world. His backtracking came after Charles' concerns were passed to the White House through 'private backchannels', it was claimed.