This dish is absolutely fantastic! We don't eat shrimp, so I skipped that and added garlic to the cream sauce instead (about 1 tsp chopped garlic). I couldn't find pancetta at the grocery store, so I used diced prosciutto. I also subbed Riesling for Chardonnay since that's what I had on hand. The recipe didn't specify what to do with the green onions, so I used them as a garnish. My husband said it was the best carbonara he has ever had! Made for PAC Fall 2011.