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The underlying, enzymatic process of tobacco fermentation is the same within a pile of thousands of pounds of tobacco leaf and within a kiln. For cigar leaf, the growing latitude (sun angle and exposure) bring about a greater difference than the specific fermentation method you choose. So my home-grown Corojo 99, kiln-fermented and aged about two to three years is of a similar quality to commercially grown and pile fermented Corojo 99, but the home-grown is not quite as intensely flavored, and its nicotine is slightly lower (so far as I can guess).
Most home growers do not have the option of creating a giant pile (as large as an automobile) of leaf for fermenting in a sub-tropical climate. Smaller piles don't provide sufficient insulation and heat generation. You are realistically left with the only option being to build a kiln--which is always easier than it seems.
If you are along the Black Sea coast, or in the Kolkhida Lowlands, then you may have the sub-tropical climate for bulk (pile) fermentation to work, but you are still unlikely to have sufficient leaf.
Bob