This chapter reveals the crucial yet overlooked role of Zionist women in shaping public health and national identity in Mandate Palestine through the communal, knowledge-driven crafting of recipes. Between 1920 and 1940, immigrant women trained in nutrition and home economics transformed kitchens into experimental laboratories, adapting to a new climate and agricultural environment by testing local ingredients and refining menus. Their work combined traditional knowledge of local food preparation with emerging nutritional science—especially the understanding of vitamins and caloric balance—to create recipes that served not only domestic needs but also the Zionist vision of building a healthy population and nation. By tracing this collective knowledge-making process, the chapter reframes recipes as a form of medical and scientific literature and cookbooks as tools of public health education. This study highlights how the intersections of nutrition, gender, and science contributed to Zionist nation-building and situates these developments within the broader global histories of science, feminist scholarship, and the social history of medicine.