AAAA > the Moldovan man taught me so. You tear off a strip of the newspaper and drop it into the wine for a few seconds. The wet part remains. Of this wet part, also painted only part. So the more painted part, the more in the wine grape juice, i.e. a natural colorant.
BBBB > chromatography, thumb! And if there are two stripes, then the woman of the winemaker is pregnant!