Air-dried raspberry is dried with heated air, which removes water as vapour from a liquid phase. The cell walls collapse as the water leaves, so the piece shrinks, darkens and ends up dense and chewy rather than crisp. That is not a defect, it is the format: air-dried fruit is bought for tea blends, cereals, bakery inclusions and anywhere a piece has to survive mixing and baking without shattering. It costs a fraction of what the freeze-dried format costs, and it behaves completely differently, so the two should never be quoted against each other as if they were alternatives.
Seasonality and availability
Raw material comes from the summer raspberry harvest, dried either directly or from frozen stock. Drying capacity is more available than freeze-drying capacity, so lead times are shorter and the product is easier to get at short notice. Quality varies with the drying schedule as much as with the fruit.
What the buyer checks at intake
- Moisture content and water activity, with the temperature of the water activity reading recorded.
- Sulphite status. Confirm whether the lot is sulphited and at what level, and check it against your label.
- Colour, which darkens with drying temperature and with storage.
- Texture by hand. Hard, glassy pieces indicate over-drying.
- Caking and consolidation in the bag, especially after a warm transport leg.
- Foreign matter and stalk content.
Related standards and routes
Ambient dry goods, no reefer required. Keep it away from humidity and heat in transit. Certification is normally BRCGS or IFS Food, with EU organic where relevant.