Loaf & Levain is an independent sourdough resource built around one idea: baking gets easier when you measure instead of guess. The free schedule calculator predicts fermentation timing from your kitchen temperature, hydration, and starter strength — and the knowledge base explains the why behind every number.
Who writes this
Loaf & Levain is written and edited under one editorial standard: every guide is checked against the same fermentation model that powers the calculator, and every number — bulk percentages, hydration targets, retard windows, water temperatures — is one we have tested at the bench across cold winter kitchens and humid summer ones. The same Q10 fermentation math (about 2.2× per 8°C, anchored to five hours at 24°C) runs through the calculator and every article, so the advice here and the tool agree by design — not by coincidence.
What we cover
Fermentation science, starter maintenance and rescue, hydration, shaping and scoring, and the long list of things that go wrong (and how to diagnose them). If a guide gives a number, it also tells you how to know whether that number is right for your dough.
How it's funded
The calculator and all knowledge-base articles are free. The site is supported by display advertising and an optional one-time Pro upgrade. We don't gate the core content behind a paywall, and we don't publish recipes we haven't baked.
Get in touch
Questions, corrections, or a bake that's misbehaving? Reach us on the contact page.