Packaging and storage
The last step, and the one most likely to undo the previous fifteen. Chocolate absorbs odours, hates temperature swings and blooms when it is cold.
Finished chocolate is wrapped and stored, and both decisions are technical rather than cosmetic.
Cocoa butter is an efficient absorber of ambient odours, so chocolate stored near anything aromatic takes on its smell — which is why it is wrapped in foil or metallised film rather than paper alone, and why storing a bar next to coffee or spices is a bad idea at home as well as in a warehouse.
Temperature is the other constraint. The stable crystal form that tempering produced converts slowly to a still more stable form, and warmth accelerates it; the migration of fat to the surface that results is bloom. Repeated temperature cycling is worse than a steady warm temperature. And refrigeration causes a different problem: condensation on a cold bar dissolves surface sugar, which recrystallises as sugar bloom when it dries.
The conditions that follow — a steady 15 to 18°C, low humidity, away from strong smells, not the fridge — are the practical advice that the whole chain has been building towards.
What it does
Protects the chocolate from odour absorption, moisture and light, and holds it at a temperature that preserves the crystal structure tempering created.
Why it matters
Poor storage produces bloom and off-flavours in a product that was made correctly, which makes it the cheapest place in the entire chain to lose quality.
- Typical temperature
- 15–18°C
- Why the range is wide
- Steady temperature matters more than the exact figure. Cycling between warm and cool accelerates the crystal conversion that causes fat bloom far more than a constant slightly-too-warm store does.
When it goes wrong
Fat bloom from warm or fluctuating storage; sugar bloom from refrigeration and condensation; and odour pickup from storage near aromatic goods.
Commonly misunderstood
That the fridge is a safe default. Refrigeration causes condensation on the surface, which dissolves sugar and leaves it recrystallised as a white film when the bar warms. It also mutes the aromatics.
Related
Defines
- Chocolate barThe bar's foil or metallised wrap is functional: cocoa butter absorbs ambient odours efficiently, and paper alone does not stop it.
Covered in
- Chocolate bloom explainedThe storage conditions that prevent it, and why the fridge causes the other kind.
- How to store chocolateWhy these conditions and not others.
Sources
- ChocolateHQ editorial synthesis — ChocolateHQ(citation identity confirmed; passage not re-read)
- The Science of Chocolate — Royal Society of Chemistry(citation identity confirmed; passage not re-read)