The doggy bag you take home should be put in the refrigerator (between 3°C and 7°C) as soon as possible. So if you’re planning to spend the afternoon shopping, it’s not a good idea to take your leftovers with you. Reheat your spaghetti only once, and try to finish the leftovers by the next day at the latest. Freezing your doggy bag isn’t a great idea, since the spaghetti will lose its flavor that way.

