Maarten Langeslag learned to bake all over the world and in 2021 started his dream bakery in Amsterdam: Fort Negen. Every day, the tastiest sourdough breads, pastries, viennoiserie, and filled sandwiches make their way to the counter. And now he shares his recipes: over 200 in total. In addition, Maarten provides all kinds of practical information about grains, fermentation, and techniques.