See this guide to our recent   South American coverage including many tasting notes This week is South American Week here at JancisRobinson.com. I realised with horror that we have been far too Eurocentric recently, so we will try to make amends. We begin with these tasting notes from the massive recent Chilean annual generic tasting in London. Producers were invited to submit samples that properly communicated the character of Chile's increasing roster of wine regions - increasing so rapidly that, I have to confess, I had to look up where Choapa is, even though I see it featured in last year's catalogue. (It is yet...