What did Fannie Farmer do that was important?

Fannie Farmer was a pioneering American cookbook author and a key figure in the development of modern American cooking. She is best known for her 1896 cookbook, "The Boston Cooking-School Cookbook," which standardized recipes and introduced precise measurements, making cooking more accessible to the average home cook. Farmer also emphasized the importance of nutritional science in cooking, and her work laid the foundation for future culinary education. Her contributions helped elevate cooking from a domestic task to a respected profession.