Someone just asked me if there were any kinds of red wines that didn't leave a purple/black stain on your tongue. I don't consider this a particularly deep subject but it is intriguing to ponder exactly what it is in red wines that leaves the stain and whether certain varietals are more likely to leave the stain than others.
I've heard suggestions that it only happens with cheap wine but experience tells me something different. I would think it is related to skin and dark fruit concentration levels but that's only a semi-educated guess. I would think a petit sirah would leave more stain than a merlot but don't feel like performing any experiments.
Anyone have any evidence/ theories???? Jason, Maria Lorraine?????