Steven Leof asked about Kayser's book. I purchased a copy in Paris in
September. It is nicely done and quite interesting. His shops make
bread that as good as it gets and it has Steven Kaplan's highest
rating of 18.35 (Cherchez le pain: Le guide des meillures
boulangeries de Paris) along with that of Dominique Saibron, both of
which are located on la rue Monge Paris 5e (at opposite ends).
I am using his recipe for his signature Baguette Monge which produces
an excellent loaf, but I had to significantly increase the hydration
to make it work. It must be a typo in the book.