After trying this bowl of amazingness, there is no doubt that you will be making a big batch of Penne Alla Vodka and eating it again. Refrigerator Instructions: If you have leftover pasta, store it in an airtight container in the refrigerator for up to three days (if it lasts that long). Reheat Instructions: Use a small-medium saucepan over medium heat. Add the pasta and put a splash of milk or cream to freshen it up. Stir till the pasta is heated, and enjoy!