When you’re throwing a party, the last thing you want to think about is what you’ll eat the day after. To thank her holiday hosts and hostesses, Kareen, our Test Kitchen director, prepares really useful thank-you gifts, like spaghetti sauce (super-easy to make), pasta and a block of Parmesan. When suppertime rolls around the day after the big party, the hosts can just relax, unwind and pour themselves a glass of wine.