Filo-Wrapped Asparagus & Prosciutto

Seventeenth-century artist and food-writer Giacomo Castelvetro, whose beautiful and extraordinary fruit and vegetable paintings would not look remotely anachronistic in the glossiest contemporary food magazine, was appalled on visiting this country in 1614 to find that asparagus was both expensive and a rarity in London’s markets. If he time-travelled to see us today he would be a little comforted by its year-round availability, thanks to the miracle of jumbo-jet supply, but might still won