What Jane Austen Ate and Charles Dickens Knew

This book illuminates the mundane to the extraordinary in history—what motivated the author to explore these specific aspects of daily life?

The book highlights similarities and differences that I didn't expect—did others feel more connected to one author’s world than the other?

I'm curious whether these descriptions are based on extensive research or if some details are more anecdotal—what's the depth of the author's sources?