By Sasha Smith, NYC Correspondent This week we headed to Southern Italy, much firmer ground for me. I drink these wines more than their northern counterparts because, one, I love all those gutsy red varietals (Aglianico, Nero d’Avola, etc.) and pretty, summery white ones (Fiano, Greco, etc.) and two, they’re cheaper. It’s still a bit of alphabet soup with all the grape names, but this week I decided to relax a bit and just go with the flow, Italian style. Robert Scibelli taught this week’s class. A 2005 diploma recipient and International Wine Center staffer who’s now gunning for an…