Mercerized vs unmercerized: Which will it be?

We cotton  lovers are really quite spoiled, compared with knitters, weavers & crochetters of the past.  The 21st century has given us such a great variety of high quality cotton yarns in a never-ending rainbow of vibrant colors!  But what to choose?  That’s the big question.  Mercerized vs unmercerized–what’s the difference? Mercerized  Cotton: The modern production method…