🍞 Block 45–46: Bread — Sourdough & Enriched Doughs

← Block 43–44: Bread — Lean Doughs | Block 47–48: Pastry — Doughs & Custards →

⚗️ Experimental — This block has not yet been cooked through by the author. Content is draft; recipes and timing are untested.

"Sourdough is not a recipe. It's a relationship with a living culture that requires your attention, your schedule, and your willingness to fail several times before you produce something beautiful. The enriched doughs — brioche, croissants — are the same: they demand patience and cold butter in equal measure."

Block 45 — Sourdough Mastery

Your sourdough starter (begun in Block 43, Service 49) should now be active, bubbly, and predictable. This week you use it for real: your first loaf, your first bake, and your first encounter with the unpredictable reality of wild yeast baking.

⏰ Planning Ahead

Session 198 (Sourdough: First Real Loaf): bulk ferment 4–5 hrs + overnight cold proof — you bake the next morning

Session 200 (Brioche): dough needs overnight cold retard after initial mix

Session 201 (Croissants): block out the FULL day — lamination requires multiple cold rests

Block 46 — Enriched Doughs: Brioche, Croissants, and the Butter Line

Enriched doughs add fat, eggs, and sugar to the bread equation. The result: tender, rich breads that blur the line between bread and pastry. The techniques are more demanding — butter must be at the right temperature, the dough needs cold resting — but the products are some of the most impressive things that come out of a home oven.

Optional: Go Deeper

These aren't required reading — but if something from this block sparked a question, here's where to go.

Sourdough Science

The microbiome in your sourdough starter is a balance between wild yeast (primarily Saccharomyces cerevisiae and Kazachstania humilis) and lactic acid bacteria (primarily Lactobacillus sanfranciscensis). The bacteria produce the sour flavor; the yeast produces the rise. Temperature, hydration, and flour type all shift this balance — which is why your starter behaves differently in winter vs. summer.

📖 Sourdough Starter — The complete guide to building and maintaining a culture.
📖 The Sourdough Framework (The Perfect Loaf) — Detailed walkthrough of the sourdough process with baker's percentages explained.

Lamination: The Butter Architecture

Croissant dough and puff pastry both use lamination — alternating layers of dough and butter created through folding. The number of layers depends on the fold type: a single fold triples the layers, a book fold quadruples them. Three single folds = 27 layers. The key variable is temperature: if the butter softens, the layers merge and you get a brioche-like product. If it's too cold, the butter shatters and tears the dough.

📺 Croissant Masterclass — Watch the fold technique closely. The movement should be confident and decisive; hesitation warms the dough.

A Book Worth Having

📚 Bread Science by Emily Buehler — The scientific explanation of everything that happens when you make bread — yeast activity, gluten networks, crust formation — written for home bakers who want to understand, not just follow instructions.
📚 On Food and Cooking by Harold McGee — Ch. 10 (Doughs and Batters), sourdough and enriched sections. Wild yeast biology, lactobacillus symbiosis, how fat and sugar slow gluten development, and lamination science (butter + steam = puff). Full reading guide →

← Block 43–44: Bread — Lean Doughs | Block 47–48: Pastry — Doughs & Custards →