Answer: As long as they are unopened and stored in a dry/cool place, they can last anywhere from 6 to 12 months.

How long does it take for rice cakes to expire?

But I think they are pretty good for several months if they haven't been opened. If they get slightly stale you can put them in the microwave for about 30 seconds per cake or maybe a minute for 4 or 5 cakes, and it will crisp them up nicely.

How long does Tteok last in the fridge?

You should keep tteokbokki in an airtight container in the refrigerator. The tteokbokki will get hard as it cools down, but you can soften it up again when you reheat it. You can keep the tteokbokki in the refrigerator for 2-3 days before it starts to go bad. However, the quicker you eat your tteokbokki the better.