How to Make and Maintain a Sourdough Starter From Scratch: Day-by-Day Schedule, Feeding Ratios (1:1:1 vs. 1:5:5), and Hooch Fixes

A common myth is that a sourdough starter captures wild yeast out of the kitchen air. Microbiological sequencing proves that the dominant yeasts (Candida humilis, Saccharomyces exiguus) and lactic acid bacteria (Fructilactobacillus sanfranciscensis, Lactiplantibacillus plantarum) reside on the outer bran hull of the cereal grain itself. Because stone-ground whole rye and whole wheat retain the mineral- and enzyme-rich bran and germ, starting your culture with whole rye or whole wheat establishes a stable microbial colony twice as fast as bleached all-purpose flour.

Microbial Succession: What Happens Inside Your Jar (Days 1 to 7)

Sourdough Feeding Ratios Explained: 1:1:1 vs. 1:2:2 vs. 1:5:5

The three numbers in a feeding ratio always represent Seed Starter : Flour : Water by weight in grams. Changing the inoculation ratio controls how many hours your starter takes to peak at 76°F (24°C):

• 1:1:1 (e.g., 50g starter : 50g flour : 50g water): Peaks in 3.5 to 4.5 hours. Ideal when you wake up in the morning and want to mix Same-Day Express Artisan Sourdough Batard by noon.
• 1:2:2 (e.g., 30g starter : 60g flour : 60g water): Peaks in 5 to 6 hours. The standard daily maintenance and afternoon levain build.
• 1:5:5 (e.g., 20g starter : 100g flour : 100g water): Peaks in 9 to 12 hours. The ideal overnight counter build—mix at 9:00 PM and wake up to a domed, sweet-smelling levain at 7:00 AM with zero over-acidification.

Liquid Starter (100% Hydration) vs. Stiff Levain (50–60% Hydration)

Most home bakers keep a 100% hydration liquid starter (equal weights flour and water) because it stirs effortlessly and pours cleanly into sourdough discard recipes like Rosemary Sesame Discard Crackers and Fluffy Sourdough Discard Pancakes.

However, when baking high-fat sweet doughs such as Vegan Sourdough Brioche or Overnight Vegan Sourdough Cinnamon Rolls, building a sweet stiff levain (1 part starter : 2 parts flour : 1 part water : 0.3 parts sugar) suppresses sharp acetic acid bacteria while boosting yeast osmotolerance so your pastry tastes buttery and sweet rather than sour.

Zero-Discard Refrigerator Maintenance (The “Scrapings Method”)

If you bake once or twice a week, you never need to feed a starter daily on the counter:

1. Keep 30g to 50g of fed starter in a clean jar in the refrigerator (38°F/3°C).
2. The night before baking, remove the jar from the fridge and feed it the exact weight of flour and water needed for your recipe plus 30g extra.
3. Once peaked, take what your recipe needs (for example, 100g for Overnight Rosemary Sourdough Focaccia) and return the remaining 30g to the fridge until next week.

Return to the Complete Vegan Sourdough Pillar Hub or continue to Mastering Sourdough Bulk Fermentation.