Fermentation and Ageing

Freshly dried tobacco is not yet fit for enjoyment: it tastes bitter, has a harsh bite and is laden with ammonia. Only fermentation transforms the raw material into an aroma — a controlled sweating that ranks among the most delicate crafts in the entire cigar-making process.

The Pilón

After drying, the leaves are moistened and stacked into man-high piles called Pilones. Under their own weight and the retained moisture, the interior of the stack begins to warm: enzymes and microorganisms set the transformation in motion. A temperature probe sits at the heart of the stack, because temperature is the critical variable. When it reaches the value the fermentation master has set for that particular tobacco, the entire Pilón is dismantled, the leaves are aired and restacked — outside to inside, top to bottom — so that every leaf ferments evenly. This cycle repeats over weeks, and for some tobaccos over months.

What Happens Inside

In the warmth of the stack, ammonia and other harshnesses break down and dissipate; at the same time, sugars and aromatic compounds develop, and the colour of the leaves deepens and becomes more uniform. How warm the stack may become depends on the leaf: fermentation typically runs between 35 and 45 degrees Celsius, with delicate wrappers managed at considerably lower temperatures than robust filler tobaccos — if it runs too hot, the oils the leaf is just beginning to develop will be destroyed. The thick, oily Ligero takes longest; thin leaves finish sooner. Under-fermented tobacco betrays itself later in the cigar as an acrid sharpness.

Ageing in Bales

Fermentation does not conclude the work. The tobacco is pressed into bales — traditionally wrapped in palm bark in Cuba — and rests there for months, often years. During this quiet phase, aromas continue to round out; some manufacturers also age select tobaccos in barrels. Only when the master judges the tobacco ready does it proceed to the factory.

And Later: the Box

Ageing does not end with rolling. Finished cigars rest first in the factory so that the moisture levels of the different processed leaves can equalise — and after that, development continues in the humidor. Many connoisseurs lay down full boxes for years and watch the cigars grow softer and more harmonious. A separate chapter on the practical side covers this in detail; for now, one thought is enough: a cigar is an aged product long before you light it.