Fruit of the Lemon by Andrea Levy

Faith Jackson fixes herself up with a great job in TV and the perfect flatshare. Neither is that perfect, as it happens. Nor are her relations with her overbearing, though always loving family.

Furious and perplexed when her parents suddenly announce their intention to retire back home to Jamaica, Faith makes her own journey there. Here she is immediately enfolded in the endless talk of her aunt Coral, keeper of a rich cargo of family history.
Through the weave of her aunt's storytelling a cast of ancestors unfolds, stretching back to Cuba and Panama, Harlem and Scotland. Funny and compassionate, refreshing and wise, Fruit of the Lemon is a story that passes through London and sweeps over continents. It fully delivers the promise of Every Light in the House Burnin' and Never Far From Nowhere.