פתחי הלכה - Binyomin Forst, Aaron D. Twerski - Google Books

https://books.google.de/books?id=P_2QlQkNL8sC&pg=PA49#v=onepage

This contemporary halachic classic explains how the complex laws of blessings on food are developed and derived. Includes a comprehensive list of foods and blessings and an eloquent, philosophical introduction.