1. This recipe calls for way too much vodka. I doubled the recipe and added 3 cups of vodka (2.5 cups at 80 proof and 0.5 cup at 100 proof). As I was making the alfredo, I accidentally forgot about it and let the sauce spill over onto a gas burner. The whole pot caught on fire! Even with that event and letting the sauce simmer for an extra 20 minutes, the sauce still had too much vodka in it. Recommendation: Add 1/2 the amount vodka and taste to see if you need more. 2. The sauce was very runny and not thick. No recommendation for this one