Vegan wines are simply wines made with no animal products. During the winemaking process, sediment is often removed from the wine by filtration and fining agents, some of which are made from casein, a protein found in milk. Winemakers can either choose to use plant-based fining agents, or not to at all, as is the case with some natural wines that take on an unusual cloudy appearance.
Wine Shop - Vegan wines - Mastrojanni - 2017

The Mastrojanni Estate is situated in the south-east corner of the Montalcino region, set apart up a dirt road from the village of Castelnuovo dell'Abate. The wines are traditional and terroir-driven and the winery eschews the use of barriques as one might expect from such traditionalists. Having been purchased by coffee giants Illy, the estate has enjoyed even greater success in recent years and is now rated in the top 10 in the region.
There is plenty of ripe fruit in the bottle but the wines also have a savoury sophistication and retain a freshness and vivacity in later years after their more initially-exuberant peers have faded. Indeed, Nicolas Belfrage states that the single vineyard Riserva, Schiena d'Asino is 'at its peak, to die for...the 1990 was one of the finest Brunellos I have ever tasted'.
There is plenty of ripe fruit in the bottle but the wines also have a savoury sophistication and retain a freshness and vivacity in later years after their more initially-exuberant peers have faded. Indeed, Nicolas Belfrage states that the single vineyard Riserva, Schiena d'Asino is 'at its peak, to die for...the 1990 was one of the finest Brunellos I have ever tasted'.