Sourdough vs Commercial yeast bread
Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.
Artisan loaves, complex flavour, long weekend baking when you can plan ahead, potential digestibility benefits.
Weekday baking, sandwich loaves, pizza dough, predictable results quickly.
| Aspect | Sourdough | Commercial yeast bread |
|---|---|---|
| Time | 12-24+ hours | 2-3 hours |
| Starter required | Yes (maintain weekly) | No |
| Flavour | Complex, tangy | Mild, consistent |
| Shelf life | 3-5 days | 1-2 days |
| Complexity | High | Low-medium |
Frequently asked
Is sourdough healthier?
Genuine long-fermented sourdough has a lower glycaemic index and partially breaks down phytic acid and gluten. Supermarket 'sourdough' is often yeasted bread with sour flavouring added — these health benefits apply only to genuine long-fermented sourdough.
What temperature kills yeast?
Starts dying above 40°C, dead by 60°C. Water for yeast activation should be 37-43°C. Cold water (4-10°C) slows yeast for an overnight cold-proof. Sourdough wild yeast is similar in heat sensitivity.
Frequently asked questions
Is sourdough healthier?
Genuine long-fermented sourdough has a lower glycaemic index and partially breaks down phytic acid and gluten. Supermarket 'sourdough' is often yeasted bread with sour flavouring added — these health benefits apply only to genuine long-fermented sourdough.
What temperature kills yeast?
Starts dying above 40°C, dead by 60°C. Water for yeast activation should be 37-43°C. Cold water (4-10°C) slows yeast for an overnight cold-proof. Sourdough wild yeast is similar in heat sensitivity.