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Freezer ice / water

CrapaudCrapaud Posts: 2,483
edited August 2011 in The bottom bracket
You know how when you've opened, say, a packet of veg, and put it back in the freezer then, sometime later, bring it back out, the veg is encased in ice? What's the peculiar smell of the ice?

With veg I usually defrost them slightly with tap water, drain and rinse, to get rid of the freezer ice and it seems to get rid of the taste but I've just eaten some otherwise excellent onion bajis without this and there's a definite aftertaste that spoiled my enjoyment.

Is the ice contaminated with something or is it the smell of pure water, or what? Anyone know?
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Posts

  • McBain_v1McBain_v1 Posts: 5,237
    Probably contaminated with minute quantities of fridge coolant :shock:

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  • MattC59MattC59 Posts: 5,408
    I know the smell you're talking about.

    It's more than likely 'eau de everything in the freezer'. When you leave food in the freezer, it will eventually dry out the food. As the air in a freezer is sub-zero, it is very dry. However, as with all things, the air wants to reach an equilibrium, so slowly draws moisture from the food in the freezer. This moisture then freezes, which results in teh frost. As this drawing of moisture isn't selective, trace amounts of the food will also be drawn out. So, the ice is contaminated with trace amounts of pretty much everything that's been in the freezer. Nothing to cause concern, but enough to make the ice have an odd smell.

    Working in the gas detection industry, I can pretty much guarantee that the smell isn't fridge coolant.
    Science adjusts it’s beliefs based on what’s observed.
    Faith is the denial of observation so that Belief can be preserved
  • MattC59 wrote:
    Working in the gas detection industry.

    Fart sniffer? :shock:
  • MattC59MattC59 Posts: 5,408
    MattC59 wrote:
    Working in the gas detection industry.

    Fart sniffer? :shock:
    eeerm........... not exactly !!
    Science adjusts it’s beliefs based on what’s observed.
    Faith is the denial of observation so that Belief can be preserved
  • Me thinks you be telling porkey pies, you're a professional butt sniffer ain't you! =P
  • CrapaudCrapaud Posts: 2,483
    I wouldn't expect it to be coolant, McBain, otherwise the freezer wouldn't work.

    I did what I should have dne before posting and googled it. No-one really seems to know, but Matt's theory makes sense. Maybe I just need to seal the food up better before freezing.
    A fanatic is one who can’t change his mind and won’t change the subject - Churchill
  • keef66keef66 Posts: 13,123
    I remember it used to be really bad when we first got a fridge when I was a kid. We're talking 40+ years ago. Nowadays I rarely notice any off-flavours.

    Either I am losing my sense of taste along with my eyesight and my memory as I get older, or they have improved the plastics used in the manufacture of fridges / freezers. Or possibly both.
  • nevmannevman Posts: 1,611
    Both my dogs have their noses permanently in the oven/dishwasher but wont go anywhere near an open freezer-they know something.
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  • It's the smell of the coolant, perfectly fine to eat, just smells a bit funny.
  • If it's the smell of coolant, you need to get a new freezer!
  • CrapaudCrapaud Posts: 2,483
    I'll ask again, if it's the coolant would the freezer not stop working? As it's working fine - it's fairly new - I doubt it'd be the coolant. What does coolant smell like?
    A fanatic is one who can’t change his mind and won’t change the subject - Churchill
  • Homer JHomer J Posts: 920
    Veg? People still eat that stuff?
  • MattC59MattC59 Posts: 5,408
    Crapaud wrote:
    I'll ask again, if it's the coolant would the freezer not stop working? As it's working fine - it's fairly new - I doubt it'd be the coolant. What does coolant smell like?
    It's very unlikely to be the coolant. Most domestic freezers use R134a, which is all but odourless (the MSDS states that it has a 'faint ethereal odour' what ever that means !?!). In order to smell it, you'd need a catastrophic leak of refrigeration system to have sufficient in the air for our noses to detect. It also boils at about -26C (IIRC) so would be gaseous inside your freezer. In order to be solid and part of the ice, it would need to be below about -100C in your freezer.
    The other reason that it's unlikely to be the refrigerant, it that the epipes within the freezer are extruded pipes, ie there are no joints. No joints pretty much means no leaks.

    So, bottom line, if you had sufficient refrigerant leak to allow you to smell it, your freezer wouldn't work.
    Science adjusts it’s beliefs based on what’s observed.
    Faith is the denial of observation so that Belief can be preserved
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