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Quality Control Olive Oil quality is of utmost importance to consumers and producers. Discuss quality methods, and best practices.

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  #1  
Old July 18th, 2000, 07:16 PM
Iain Latter
 
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Oil Quality

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<pre>Last night i was in the supermarket here in Christchurch New
Zealand and noticed a very large display of EVO from a big local
imported label. Every bottle of oil had a large amount (5cm in
bottom of 500ml bottle) of a white milky substance floating in the
oil, their was also small white spots up the inside of the glass on
the bottle.

Any ideas of whats gone wrong, it looked awful?

iain latter
</pre>
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  #2  
Old July 18th, 2000, 07:24 PM
Gareth Renowden
 
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Re: Oil Quality

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<pre>on 19/7/2000 11:16 am, Iain Latter at latteri1@tui.lincoln.ac.nz wrote:

>
> Last night i was in the supermarket here in Christchurch New
> Zealand and noticed a very large display of EVO from a big local
> imported label. Every bottle of oil had a large amount (5cm in
> bottom of 500ml bottle) of a white milky substance floating in the
> oil, their was also small white spots up the inside of the glass on
> the bottle.
>
> Any ideas of whats gone wrong, it looked awful?

Your supermarket is skimping on its heating, or the oil has just come in
from a cold storeroom. Olive oil throws a waxy white deposit (and becomes
slushy when you pour it) when its temperature falls below 10C. Warming it up
gets rid of the deposit, without any ill-effects on flavour or other
properties.

This happens in my (unheated) Christchurch kitchen, so I keep my oil in the
(heated) office...

--
Gareth Renowden, Limestone Hills, New Zealand
Words, olives and truffles
Office +64 (0)3 355 9552 Home +64 (0)3 314 9921
Mobile 025 790 070
"I knew she carried a snorkel in her handbag, but would she use it?"(Sir
Henry)
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  #3  
Old July 19th, 2000, 12:12 AM
Constantine Alexander
 
Posts: n/a
Re: Oil Quality

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<pre>Dear Iain:

It sounds like the oil in question had been frozen at some time or that it
was very old and not kept well while in storage. I am very interested in
hearing what others say about this.

Best regards,
Constantine
www.PapasHaven.com


>From: Iain Latter <latteri1@tui.lincoln.ac.nz>
>Reply-To: OliveOil@egroups.com
>To: OliveOil@egroups.com
>Subject: [OliveOil] Oil Quality
>Date: Wed, 19 Jul 2000 11:16:24 +1200
>
>
>Last night i was in the supermarket here in Christchurch New
>Zealand and noticed a very large display of EVO from a big local
>imported label. Every bottle of oil had a large amount (5cm in
>bottom of 500ml bottle) of a white milky substance floating in the
>oil, their was also small white spots up the inside of the glass on
>the bottle.
>
>Any ideas of whats gone wrong, it looked awful?
>
>iain latter
>
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  #4  
Old July 19th, 2000, 09:31 AM
Adrian D. Shaw
 
Posts: n/a
Re: Oil Quality

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<pre>This is quite common in Britain, especially in smaller shops which skimp on
the heating in winter. I'd much rather have an olive oil like this, though,
than one which was on the top shelf of a supermarket under their bright
lights, or worse still on top of the hot meat counter!

Regards,

Adrian

> Dear Iain:
>
> It sounds like the oil in question had been frozen at some time or that it
> was very old and not kept well while in storage. I am very interested in
> hearing what others say about this.
>
> Best regards,
> Constantine
> www.PapasHaven.com
>
>
> >From: Iain Latter <latteri1@tui.lincoln.ac.nz>
> >Reply-To: OliveOil@egroups.com
> >To: OliveOil@egroups.com
> >Subject: [OliveOil] Oil Quality
> >Date: Wed, 19 Jul 2000 11:16:24 +1200
> >
> >
> >Last night i was in the supermarket here in Christchurch New
> >Zealand and noticed a very large display of EVO from a big local
> >imported label. Every bottle of oil had a large amount (5cm in
> >bottom of 500ml bottle) of a white milky substance floating in the
> >oil, their was also small white spots up the inside of the glass on
> >the bottle.
> >
> >Any ideas of whats gone wrong, it looked awful?
> >
> >iain latter
--
Adrian.Shaw@aber.ac.uk
Institute of Biological Sciences, University of Wales,
Aberystwyth, Ceredigion, Wales
http://pcjagg.dbs.aber.ac.uk/index.html
</pre>
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