Discussion of "A possible generating algorithm of the Voynich manuscript"

[Jorge_Stolfi]

The comparison to wine isn't the best one: you don't make iron gall ink by fermenting iron. Rather, you add ferrous sulphate to a solution of crushed oak galls.

If you add a low amount of ferrous sulphate relative to the other ingredients, you end up with a low iron ink. Whether this amount can be so low as to avoid detection in some samples, I don't know.

The black color of the ink is entirely due to the iron ions combining with tannins from the galls.  A "low iron" ink would be light and would not darken with time, like the proper formula would.  It would be indeed like a "low grape red wine".

I assume the McCrone institute has experience in these matters.

They certainly have experience... But does that make them infallible?