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All about Freeze-Dried Instant Coffee
All about Freeze-Dried Instant Coffee ✔ 3 min read


As you recall in the previous NERO AMORE blog, we talked about Instant coffee then Spray-Dried instant coffee. Freeze-Dried Instant Coffee has more flavor for people who avoid caffeine or are cautious but it needs more effort and It is a little expensive than the Spray-Dried Instant Coffee. In this part, we will dive deeply into this process but before talking about instant coffee, we have to know more about the process in general.

General Use Of Freeze-Drying


Freeze-drying is a Food processing technique that removes water in order to extend the shelf life.
There are several steps in this procedure:

The temperature of the Coffee is first reduced, generally to around -40°C, causing the free water to freeze. Later, the pressure in the device is reduced, and the frozen water sublimates (primary drying).
Finally, the confined water is removed from the product by raising the temperature of the product and lowering the pressure in the equipment, achieving the desired residual moisture level (secondary drying).

Freeze-Drying in Instant Coffee


In the manufacturing of instant coffee, freeze-drying is an important step. The coffee beans are roasted and ground before being dissolved in hot water. Coffee flavor, fragrance, and color are removed from the grinds in this procedure, yielding a highly concentrated liquid (the coffee solution is typically 15–30 percent coffee by mass at the conclusion of this extraction procedure).

The coffee extract is dried after filtering to produce solid soluble coffee. To make a thin coating, the liquor is frozen to around -40°C and then broken into tiny pieces. The frozen product which is called granules is subsequently placed into the freeze-dryer,  which uses both batch and continuous plants to freeze-dry it. The frozen product is freeze-dried in both batch and continuous facilities.


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