Grignolino is what put Accornero on the map, and the family has been coaxing it out of these Vignale hillsides for six generations. It's a pale, thin-skinned, wilfully difficult grape most estates gave up on decades ago — here it's the point of pride. The 'Bricco del Bosco', and especially the old-vine Vigne Vecchie riserva, is the bottle worth an argument: sharp, savoury, nothing like the soft reds people expect from Piedmont.
The Barbera side is no afterthought either — 'Bricco Battista' is the cru everyone comes back for, dark and built to keep. You can taste through it properly: three booked visits, from a €25 walk-through the cellar to a €60 tour out into the vineyard with food alongside, in Italian or English. Book ahead; this is a working estate, not a drop-in bar.