Poolish 101: Your First Pre-Ferment

What Is a Poolish?

A poolish is a wet pre-ferment made with equal parts flour and water (100% hydration) plus a tiny amount of yeast. It ferments for 8-18 hours before being added to your final dough.

Origin: French bakers adopted it from Polish baking traditions (hence the name). Italian pizzaioli use it extensively for Neapolitan-style dough.

Why Use a Poolish?

• ✕ Flavor: Complex, slightly sweet, wheaty notes
• ✕ Texture: More open crumb, better oven spring
• ✕ Extensibility: Dough stretches more easily
• ✕ Shelf life: Bread stays fresh longer
• ✕ Digestibility: Pre-fermentation breaks down more starches

Basic Poolish Recipe

For a poolish that represents 30-50% of your total flour:

Mix everything in a container. Cover loosely. Leave at room temperature (20-22°C) for 12-16 hours.

How to Know It's Ready

A mature poolish:

• ✕ Has doubled or tripled in volume
• ✕ Surface is domed and covered with small bubbles
• ✕ Smells sweet, yeasty, slightly alcoholic
• ✕ Just starting to collapse slightly in the center

Under-ripe: Smooth surface, no bubbles, still smells like raw flour. Over-ripe: Fully collapsed, very liquid, strong alcohol smell, sour.

Using Your Poolish

Add the entire poolish to your remaining flour, water, salt, and yeast. The poolish replaces that portion of flour and water from your total recipe. Knead until smooth.

Temperature Tips

## Common Mistakes

• ✕ Too much yeast: Poolish matures too fast, becomes acidic
• ✕ Sealed container: CO2 needs to escape; cover loosely
• ✕ Using it too late: Once it's fully collapsed, it's past its prime
• ✕ Wrong ratio: Poolish must be 1:1 flour:water by weight