Linen
From AmtWiki
Linen is made from plant (Flax) stems that are treated to a multiple step process to become spin able fibers. Some of the highlights include: soaking the stems to rot the woody core of the stems, drying them, and them pounding them with mallets and other tools to free the fibers from the bark, and then combing the resultant fibers to remove any other particles and to prepare them for spinning. Linen is naturally brown, however bleaching occurred in period and is known to have added considerably add to the cost of the cloth.
Very little linen has been found at archeological sites because it is a vegetable fiber and decomposes very easily.
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