Dehydration vs Freeze-Drying: What Actually Changes
Two methods, two very different results. A practical guide to which one suits which fruit, and why we use both.
People use "dried" as a single word, but the two processes behind it produce almost opposite products. Understanding the difference explains why our mango is chewy and our dragonfruit shatters.
Low-temperature dehydration
Warm air is moved across sliced fruit over 8 to 14 hours, pulling moisture out gradually. We hold temperatures at 45–55°C — low enough to protect heat-sensitive vitamin C and the volatile aromatic compounds that make fruit smell like itself.
The fruit shrinks and its sugars concentrate. The result is dense, chewy and intensely flavoured. This is the right method for mango, banana, pineapple and citrus.
Freeze-drying
The fruit is frozen solid, then placed under vacuum. The ice converts straight from solid to vapour without ever becoming liquid — sublimation. Because water never moves through the fruit as a liquid, the cell walls are not dragged inward, and the structure stays where it was.
- Retains roughly 95% of original nutrients versus 60–75% for heat drying
- Produces a light, crystalline, shatter-crisp texture
- Takes 24–36 hours and far more energy, which is why it costs more
- Grinds into a fine, vividly coloured powder
Why our powders are freeze-dried
Heat-dried fruit mills into a dull, slightly caramelised powder — the sugars have already begun to brown. Freeze-dried fruit mills into something startling: our pitaya powder is genuinely magenta, because nothing in the process ever cooked it.
That colour is not decoration. It is a direct visual signal that the anthocyanins and other heat-sensitive compounds survived the process intact.
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