You’ve baked the perfect sourdough — golden, crispy crust, open crumb. How long does it stay fresh? The answer depends almost entirely on how you store it.
Shelf life by storage method
| Method | Shelf life | Crust | Crumb |
|---|---|---|---|
| Plastic bag | 2-3 days | Soggy, rubbery | Mold within 3 days |
| Bread box (plastic/metal) | 2-3 days | Dry in 1 day | Dry and crumbly |
| Paper bag | 1-2 days | Dry | Dry |
| Beeswax-lined cotton and linen | 7-10 days | Crispy | Soft and moist |
Why does the plastic bag fail?
Plastic is airtight. As the bread cools, it releases moisture. That moisture gets trapped in the bag and condenses on the inside. Result: the crust becomes rubbery, and the humid environment creates perfect conditions for mold spores.
Why does the beeswax bag work?
Beeswax breathes. The natural materials cotton and linen allow just enough air to pass through, while the beeswax prevents the moisture from evaporating completely. The bread gets the ideal balance — crispy on the outside, soft on the inside — for a whole week.
Three tips for maximum shelf life
- Let the bread cool down completely before putting it in the bag. Warm bread in a closed bag = condensation.
- Cut from the middle and place the halves cut-side-to-cut-side. The crust protects the crumb.
- Store at room temperature, not in the refrigerator. Cold causes the starches to crystallize — the bread becomes dry and tastes stale.
When the bread is at its best
Sourdough is actually best on days 2-4. By then, the acids have mellowed out, the crumb has "set", and the flavor is rich. With a beeswax bag, you can keep the bread in this sweet-spot phase for several days.