I always have a bottle of this on-hand as I have yet to encounter a more delicious 750ml bottle for the price point (~$40). Some batches are better than others, but usually in the 4 star range (.5 star added here for the value).

Funky, lactic, cheesy flavors mixed with a refreshing aloe syrup flavor. It is hard to describe. The good batches have a nice complex finish, the bad ones are a bit more thin and tend towards the more diluted side.

I’ve been lucky enough to try two different bottles of this from different years:
Lot 1 from 2004
Grassy, buttery, and clean. This is a delicious batch, but a bit on the boozy side for me even after letting it settle for about 6 months. Nonetheless, a delicious blend that takes you from a slight initial smokiness into the vegetal/largo notes.
4 Stars for this batch.
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Batch R170, 2015
This was my first bottle of Mezcal which was given as a gift – luckily after tasting it I had immediately gone and bought another for the closet. Cracking it open after many years and mezcals later, I was curious if it was actually as good as I remembered. It is.

On the nose you smell bell pepper, a touch of sour apple, a hint of smoke, and a heavy herbal/green scent. On the palette a rich viscous liquid with wet fern/rain forest floor flavor in perfect balance with just a kiss of granny smith apple and the clay/mineral flavor. Really a beautiful bottle.
5 Stars for this batch

Series 4 (2019)

Tried a pouring at a friend’s who had it open for about 6 months. A solid tobasiche, the tennis ball smell/flavor described elsewhere mixed with lemongrass/minerality is a fairly accurate description. I can see why this gets rave reviews as for that flavor profile it is about as good as it can be. While great production quality – not my favorite flavor profile personally.