Jack & the FlumFlum Tree, by Julia Donaldson
The only cure for Granny’s moozles is the fruit of the flumflum tree which grows on the faraway Isle of Blowyernose. So Jack and his crew set sail, with a large patchwork sack that Granny has filled with an odd assortment of items from chewing-gum to tent pegs. But what use will they be against hungry sharks, a leaky boat and a thieving monkey?