Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
A few slices short of a loaf.

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Smart Food Containers

Containers that go black when food goes off
  (+3)
(+3)
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This is for those of us who can never remember just how old all those leftovers in the fridge are. Smart plastic bags or containers that will can detect the gases given off by food decomposition, and turn black when they build up. Alternatively, they might register bacteria and fungi. This would actually be really useful in the third world and any other place where they don't have a lot of refrigeration, and lots of people die from botulism and salmonella.

And if we can't make it work that way, we'll just package it in vacuum wrap and make it turn black after three days' exposure to the air.

DrCurry, Nov 18 2002

Toxin Alert http://www.toxinalert.com/
You mean like this? [-alx, Oct 04 2004, last modified Oct 21 2004]

[link]






       This is an exelent idea, you should pitch it to tuperware.   

       In the spririt of the mine canary, I propose a Tupperware Canary.
bristolz, Nov 18 2002
  

       I bet he'd stay fresh for a while.   

       Black is probably not a good, politically correct color. Maybe greenish-purple?   

       How many votes did you get the first time?
FarmerJohn, Nov 19 2002
  

       Maybe just brown opaque. Anyhow, greenish purple is dark blue, and anything brightly colored (fluorescent green etc.) would be too disconcerting to the consumer.
Macwarrior, Feb 03 2003
  

       I doubt the container could, but I think *you* can.
DrCurry, Nov 15 2003
  
      
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