In late April, Tom Philpott sat down with Alice Waters and Jonathan Kauffman at the Bay Area Book Festival in Berkeley, California. Some have described Alice Waters as “the most important figure in the culinary history of North America.” Her new book, “Coming to my Senses,” is a juicy memoir about her life up to the opening of her historic restaurant Chez Panisse. San Francisco Chronicle food writer Jonathan Kauffman is the author of “Hippie Food: How Back-to-the-Landers, Longhairs and Revolutionaries Changed the Way We Eat.” Alice and Jonathan duke it out over the ongoing influence of hippie food.