The Oxford Companion to Italian Food, by Gillian Riley.
Gillian Riley with the help of other contributors has created a comprehensive encyclopedia of Italian food, which is enlivened with mini-essays that display her wit and her erudition. She covers all 20 regions of the mainland, Sicily and Sardinia. She discusses cheeses, sausages, produce, spices, regional dishes, cooking styles, history, cultural influences and important culinary figures, but excludes wine, which would require a volume of its own.