Picnic at Park Guell

Our last meal in Barcelona: cheese, bread, fruit at Gaudi's fanciful
Park Guell, high on a hill overlooking the city. We picked up the
fixings at a Mercat de la Boqueria, a chaotic mall of a market where
you can find camembert for 2 euros or a few tomatoes for 40 cents.
(What is that white slice with the bright magenta rind and black
flecks? I have no idea, but it tasted kind of like kiwi-melon.)