Sourdough Starter for Beginners: A No-Fuss 7-Day Guide
I babied my first sourdough starter like it was an actual pet. I was nervous, I set timers, worried who would take care of it while I was on vacation. We named her, Gary.
Then I just got tired and busy for a stretch, and stop checking it every three hours. And it was just fine. That’s the advice I’m passing on to you. A sourdough starter is remarkably forgiving. It wants to live. Your job is mostly to get out of its way.
What is a Sourdough Starter?
A live fermented mixture of flour and water that captures wild yeast and bacteria from your environment. It makes sourdough bread rise and gives it that tangy flavor, no commercial yeast needed. Once established, a starter can last indefinitely with regular feeding.
What You Need
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- Whole wheat or rye flour (days 1-2), then all-purpose or bread flour
- Water (filtered, or tap water left to sit overnight if heavily chlorinated)
- A clean 1-litre glass jar with a loose-fitting lid or cloth cover
- A kitchen scale
- A rubber band to mark the level
The 7-Day Process – Sourdough Starter for Beginners
Day 1
Mix 50g whole wheat flour + 50g lukewarm water. Stir until no dry flour remains. Cover loosely, leave at room temperature (ideally 21-24C / 70-75F). Mark the level. Leave 24 hours.
Day 2
Discard all but 50g. Add 50g all-purpose flour + 50g water. Stir, mark, wait 24 hours.
Note: Why discard? Keeps acidity balanced. Use discard in pancakes, crackers, or flatbread — don’t waste it.
Days 3-4
More activity — bubbles throughout, slight sour smell, the mixture rising and falling. Keep discarding to 50g, feeding 50g flour + 50g water every 24 hours.
Days 5-6
Visibly active — rising reliably, full of bubbles, smelling pleasantly sour (like yogurt or mild vinegar). Switch to twice-daily feeding if it peaks before 24 hours.
Day 7 — The float test
Drop a small spoonful into water. If it floats, it’s ready. If it sinks, give it another day or two. Don’t rush, patience here means better bread later.
Troubleshooting
- Liquid on top (hooch): hungry starter, pour off and feed immediately. Not harmful.
- Pink or orange streaks: discard entirely and start again. The only sign of real spoilage.
- Not rising after 7 days: try a warmer spot, filtered water, or higher-protein flour.
- Smells like nail polish: too acidic, increase feeding frequency.
- Smells pleasantly sour and beery: perfect. You’re doing great.
Once Your Starter Is Ready
Store in the fridge and feed once a week if not baking regularly. Take it out the night before you want to bake, feed it, and let it come to room temperature and peak before using. Your first loaf won’t be perfect — that’s completely expected. Sourdough is a skill that develops over time. Keep going and test out some of our sourdough recipes below.
