Edda Servi Machlin, who survived the harrowing World War II years in Italy by hiding out with anti-Fascist partisans, then immigrated to the United States and wrote a definitive cookbook on Italian Jewish food, died on Aug. 16 at her home in the Riverdale section of the Bronx. She was 93.

Her daughter Gia Machlin said the cause was vascular dementia. In 1981, when Ms. Machlin published “The Classic Cuisine of the Italian Jews,” few people were aware of the distinctive Jewish culinary traditions of that part of the world, or of the centuries-long history behind them.