The Crumb Lab Blog

In-depth guides, techniques, and recipes for sourdough bakers who want to understand the craft behind the bread.

Heritage grain flour and wheat berries for sourdough baking

Baking Sourdough with Single-Origin and Heritage Grains

 Kitchen counter with baking supplies and sourdough starter jars ready for scheduled baking

Building Your Sourdough Baking Schedule: Four Timelines for Every Lifestyle

 Sourdough dough in banneton cold proofing inside a refrigerator

Cold Proof Deep Dive: Why Overnight Refrigeration Changes Everything

 Assorted sourdough bagels with unique toppings and seeds

Complete Guide to Sourdough Discard Bagels

 Sourdough bread with perfect crust showing sour flavor development

Controlling Sourness: Your Complete Flavor Dial for Sourdough

 Artisan sourdough bagels on wooden board with flour dusting

New Wave Sourdough Bagels: Moving Beyond Traditional

 Microscopic view of sourdough fermentation bubbles and microbes

Science of Sourdough Sourness: Lactic vs Acetic Acid Explained

 Fresh summer herbs and vegetables for sourdough baking

Seasonal Sourdough: Summer Flavored Loaves That Use What's Growing

 Various sourdough products including crackers and cookies

Sourdough Beyond Bread: 10 Savory and Sweet Ways to Use Your Starter

 Sourdough discard pancakes and baked goods on table

Sourdough Discard Cookbook: 15 Recipes That Don't Taste 'Discardy'

 Beginner sourdough bread with perfect crust scoring

Sourdough for Beginners: The Foolproof First Loaf

 Sourdough starter jars on kitchen counter

Sourdough Starter Maintenance Routines That Actually Work

 Summer kitchen with sourdough bread and fresh ingredients

Summer Sourdough: How to Bake When Your Kitchen is Hot

 Different types of flour in bowls for sourdough baking

Your Flour Chooses Your Microbes: Sourdough's Personal Bacteria

 Artisan heritage grain flour and wheat berries on a wooden surface

Baking Sourdough with Single-Origin and Heritage Grains

 Sourdough levain being mixed with flour, water and starter in a bowl

Building Your Sourdough Baking Schedule: Four Timelines for Every Lifestyle

 Shaped heritage grain sourdough dough in a banneton proofing basket

Cold Proof Deep Dive: Why Overnight Refrigeration Changes Everything