I checked my snack pack today and noticed the ‘sell by’ date. To say the least I was surprised when I saw it was almost a year away.

You are watching: How long does snack pack pudding last

Please ELI5 how a dairy product can have such a long shelf life!


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Back in the 1800s a guy named Louis Pasteur figured out that food spoiled due to the actions of microscopic living creatures called bacteria. These living creatures didn't spontaneously appear out of nowhere but reproduced from other living bacteria in the environment.

He had the idea that if a container could be sealed and all the living creatures within killed, such as with the careful application of heat, then the food within wouldn't spoil. This process is called "pasteurization" and is in use today on dairy products of all kinds.


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level 1
· 1y

The pudding is cooked as part of the process. This kills bacteria, and the pudding is packaged while still hot. Depending on the brand, it may also contain various stabilizers and preservatives. As long as its sealed, bacteria cannot get in and spoil the food.

https://www.youtube.com/watch?v=kCYeuRZpgDU


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level 1
· 1y

Pretty much anything can have a long shelf life if packaged properly.

Those snack packs are filled and then almost immediately sealed, not letting anymore are in that would let bacteria grow and start to rot the food.

What’s really probably chasing that sell by to be within twelves years is that the packaging will start to break over time and getting jostled around and not be perfectly sealed anymore.

It also helps when foods, like cheese and butter, are solid/thicker as it helps prevent the spread of any bacteria through the food.

You can get canned milk that can be shelf stable for years after it’s made, since a good canning process is really effective and killing any bacteria and sealing the food in an airtight container.


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level 1
· 1y

It's called "aseptic packaging" now, not just pasteurization, but it involved pasteurization as part of the process.

https://www.eagleflexible.com/about-us/blogs/what-is-aseptic-packaging/#:~:text=Aseptic%20packaging%20is%20a%20specialized,container%20in%20a%20sterile%20environment.


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level 1
· 1y

I literally had this same thought as I put away a Snack Pack on a shelf. I saw "made with real milk" and was like y u no need a refrigerate


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level 1
· 1y

These items are usually packed at temperatures high enough to kill all bacteria and other bugs and sealed shut while still that hot or within a Completely sterile Environment. Long life uht(ultra high temperature) milk is usually available in non-refrigerated supermarket aisles. The pudding just uses similar processes.


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· 1y
level 2
· 1y

The plastics break down.

See more: How To Beat Shao Kahn In Mortal Kombat 9, Last Fight With Raiden


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level 1
· 1y

They package them with inert gases like nitrogen. Oxygen causes the spoiling. A year out does surprise me though.


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