The 2018 Adrianna Vineyard Mundus Bacillus Terrae started with a marked creamy and lactic note, reflecting a very young and tender wine that started with a lot of malic acid. It has lower alcohol and higher acidity than the other two Adrianna bottlings; it's vibrant and lively, nicely textured and surprisingly fresh. The creamy and lactic note disappeared after some time in the glass, giving way to fresher notes, almost citrus. They have also done a selection of individual plants, discarding some plants in lower parts, and the wine has gained in precision and freshness. They used a high percentage of full clusters and fermented it in concrete with indigenous yeasts and matured it in used oak barrels for 18 months. In 2018, the three Adrianna bottlings have more defined character; the differences are more marked than in a year like 2017. This has to be among the finest vintages for the Mundus Bacillus Terrae.

Mundus Bacillus Terrae is a parcel of Malbec whose name pays homage to the rhizobacteria that live in symbiosis with the vines at 1,450 meters in the Adrianna vineyard. Three-quarters of the wine is fermented in concrete and the rest in foudres, followed by 18 months in French oak. The nose features violets and lavender with subdued notes of red fruit, but the wine only properly comes out in the mouth. It is pure texture with nervous tension and ripe but gentle, very Malbec-ish tannins that don't impede the flow. The magic of this wine lies in its uniqueness, both in terms of style and as an approach to the variety. It is the questions it raises that make it truly compelling.