6. Cake Mix
Duration: 6 months to 1 year.
Cost on average: $5–$10*
Cake mixes typically have a shelf life of six months to a year, depending on the number on the box. On the other hand, cake mix can be consumed four to five months after the package’s “best by” date, according to the Eat By Date. This method of extending the shelf life is only possible if the mixture is unopened.

Zety Akhzar/Shutterstock Cake Mix
You may not be very pleased with the taste and texture if you consume an opened cake mix after the suggested expiration date. The cake may be less fluffy and blander, even though the majority of cake mix manufacturers claim there are no health risks if you consume expired mix.
