A book claiming the know how on wine - oh how wrong

[Kcwhippet]

The Primitivo of Italy and the Zinfandel of the U.S. are indeed the same grape, descendants of an obscure Croatian variety. I've heard of side by side plantings of both grapes and, while they are the same grape, they've diversified by virtue of their many years of being separated. The Primitivo has slightly smaller berries and ripens a bit earlier than Zinfandel. The wine made from the Primitivo in the side by side vineyard produces a wine that's said to be like the Zin, but on steroids.