complete beginner3 min read
What is sourdough, really?
Five minutes here saves you weeks of confusion. This is the short, low-key version of how sourdough works: no difficult words, no chemistry degree needed. Read it once, and everything else in this app will make more sense.
What is sourdough?
Sourdough is bread made without commercial yeast. It rises with a living culture of wild yeast and good bacteria that you keep in a jar: that culture is called a starter. Flour, water, salt, and time is the whole ingredient list. The slow fermentation is what gives sourdough its flavour, its chew, and its long keeping quality.
What is a sourdough starter?
A starter is a mix of flour and water that has come alive. Wild yeast lives on flour and in the air of your own kitchen. Give the mix regular meals of fresh flour and water, and it becomes a stable, bubbly colony that is strong enough to raise bread. A starter can live for years, if you look after it. Some are passed down for generations.
Why does sourdough use no commercial yeast?
Commercial yeast is a single strain bred for speed. A starter is a whole community of yeasts and bacteria that works slowly, and slow is the point: the long fermentation builds flavour and texture that fast yeast simply cannot, and many people find naturally fermented bread easier to digest.
What can you bake with sourdough?
Far more than the classic crusty loaf. With one healthy starter you can bake sandwich bread, focaccia, pizza, rolls, bagels and crackers, plus sweet things like cinnamon rolls, banana bread and cookies. Even the part you remove at feeding time, the discard, has its own family of recipes. Nothing goes to waste.
Is sourdough healthier than regular bread?
Sourdough is still bread, so let us keep it honest: it is not a health food. But the long fermentation does change it. The acids slow down how quickly you digest the starches, many people find it gentler on the stomach than standard bread, and it contains nothing you did not put in yourself: flour, water, and salt. That is the most truthful claim sourdough can make. It is real bread, made slowly, with no additives.
Is sourdough gluten-free?
No. Regular sourdough is made with wheat, spelt or rye flour, and fermentation does not remove the gluten. The long ferment does break some of it down, which is why some gluten-sensitive people say they tolerate sourdough better, but it is not safe for coeliac disease. Truly gluten-free sourdough exists, but it needs gluten-free flours and its own dedicated starter.
Why is sourdough sour?
The tang comes from the bacteria in your starter. As they ferment the flour, they produce lactic and acetic acid: the same family of flavours as yoghurt and vinegar, in friendly amounts. How sour your bread turns out depends on time and temperature, so you can steer it. Longer, colder ferments lean tangier; shorter, warmer ones stay milder.