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More info × Group 28 Thank you for subscribing! We have more newsletters Show Me No thanks, close See our Privacy Notice King Charles' favourite lunchtime snack has now been unveiled - and it strays far from an average ham sandwich. A source with ties to the Royal Family revealed to The Mail On Sunday details about His Majesty's dietary preferences, signalling out a certain 'superfood' as instrumental in his cancer recovery efforts. "With some reluctance, he now has something to eat at lunchtime – a snack, really," the source clai.