For some time I have been slowly promoting the sun drying process because of its low capital cost and zero energy consumption. So the Drying Process has a very low carbon footprint! But here is someone who’s taking it even further!
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They claim a 7 to 10 day drying period is at the heart of their product quality! The long drying period means drying is gentle and they even speak of rehydration during cool moiste evenings.
The logical argument against sun drying is the potential of it being soiled either by microorganisms, insects, rodents, birds or just dust and dirt. The chance of these occurring is proportional to the time the tomato is out in the open – so it makes you think!
I have always said a 3 or 4 day drying period is necessary if a stable clean product is to be produced, but this seems to say different. Possibly there is a cleaning and sorting step involved – I will be following up and giving more information.