Wine with Leslie Williams: Focus on an underappreciated grape

This week I’m focusing on Garnacha/Grenache, arguably the most important grape in France and Spain yet also a grape that is less known than it should be given that it only occasionally appears on wine labels.
The grape was assumed to be Spanish in origin for centuries (most likely Aragón) but some Italian researchers are now claiming Sardinia as its home (where it is known as Cannonau).