About the Baker

Danny Kosarin

The Opinionated Baker is the author and opinionator-in-chief of Bread Lab. The book teaches his system, the app supports learning and using and documenting the use of the system, and this site provides a reference source for system data and modules. The Opinionated Baker's opinions are the point: decades of baking, experimentation, failure, refinement, and study, turned into a system you can actually follow.

Born in New York, educated in North Carolina (Duke University, '85), Danny is a trained cook and baker, headshot and set photographer, kombucha brewer, and serial hobbyist, currently living in Los Angeles, California, happily and variously known as Dad, Daddy, Pop, Popsicle, Paparazzi, and Bread Devil.

He is husband to retired, leggy, theatre goddess, Lauren Kosarin, father to actress, singer, producer, writer and director Kira Kosarin, father-in-law to brilliant multi-hyphenate Max Chester, and, more recently, chew toy to Miss Penny Doodle Kosarin, a rambunctious and very sweet Bernedoodle landshark.

Portrait of Danny Kosarin in a dark blue shirt, smiling — the author photo from the back cover of The Sourdough Formula.
A golden sourdough boule with a deep cross score, resting on a wooden board.
“I give it away because I believe that bread, made with care and given freely, is one of the most direct expressions of generosity I know how to make.”
— From The Sourdough Formula
“I love Slow Food. Slow Food is the radical idea that food is not just fuel, and bread is not just starch. It is a protest against optimizing food for speed, shelf life, convenience, and uniformity.”
— From The Sourdough Formula
“Most of all, I love taking three elemental ingredients and turning them into something beautiful and delicious.”
— From The Sourdough Formula