Sonoma County, CA; 14.6% ABV; apparently labeled for export to Mexico
$6 at the Oakland, CA, store on 8 Feb
I thought the Ravenswood 2009 Mendocino County Zinfandel was reasonably good. This wine is much better, for a dollar less.
I decanted this wine off some sediment that was almost entirely crystalline, so decanting was not really necessary for that reason. After about 1.5 hours, it showed full-bodied ripe blackberry, dark cherries, and something in the mint / eucalyptus area. The finish was dry and tannic, but not harshly so.
The second half (saved in a 375ml bottle and stoppered with very little air) was even better. After another hour or so of air in the glass, the wine showed richer, fuller-bodied, ripe fruit of blackberry, dark purple / red cherries, blackcurrant, cranberry, and a little mint. The finish is still thickly tannic but pleasant. This is a big Thumbs Up for me.
Update: I should add that, just popped and poured, this wine seems thin and tannic. It really needs the air to fill out, so I guess decanting would be helpful for that purpose.