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Old 08-25-2006, 07:17 PM   #1
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Sour Milk ?

I have a recipe that calls for sour milk or buttermilk. In the past I have soured milk with lemon juice. I actually have some real sour milk (dated August 19) Can I use that? It is a cookie recipe BTW.

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Old 08-25-2006, 07:25 PM   #2
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If you're cooking biscuit, you've got something good with Aug 19 milk. The only thing better would be old buttermilk.

I know what you mean with lemon juice or vinegar, but, from experience, neither of those yield the same result.

For the microbioligists out there, remember that as long as sour milk is used in a dish requiring high heat (such as biscuit), any "bugs" will be killed off by the heat.

Tom
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Old 08-25-2006, 10:51 PM   #3
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Quote:
Originally Posted by tdejarnette
I have a recipe that calls for sour milk or buttermilk. In the past I have soured milk with lemon juice. I actually have some real sour milk (dated August 19) Can I use that? It is a cookie recipe BTW.
Actually - unless the milk is whole RAW milk straight out of the cow (not pasteurized or homogenized or processed in any way) what you have is probably not sour milk, it is spoiled milk!

Sour milk is fermented by lactic acid bacteria and gets thicker like yogurt or sour cream. This bacteria that causes milk to "sour" is killed when it is pasteurized. That's why if you want to make yogurt at home (using milk off the shelf at the grocery store) you have to add the narutally occuring lactic acid bacteria back into it.

While not the same texture ... buttermilk has a similar taste - adding lemon juice or vinegar to fresh milk from the grocery store also gives a similar flavor. Adding acid to milk will give it a sour taste - but not the same flavor or texture of natural fermentation.

Quote:
Originally Posted by TomW
For the microbioligists out there, remember that as long as sour milk is used in a dish requiring high heat (such as biscuit), any "bugs" will be killed off by the heat.
Tom, those bugs in sour milk are good for us! Although I'm not so sure about the bugs in spoiled milk.
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Old 08-26-2006, 04:33 PM   #4
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I have to agree with Michale in FTW - old milk is "spoiled" milk, not "sour" milk - I'd definitely do the lemon juice or vinegar trick or go with buttermilk.
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Old 08-26-2006, 05:16 PM   #5
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Interesting information, Michael. Thanks. It sounds to me as if it would be best to pour the rotten milk down the drain and buy a carton of buttermilk.
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Old 08-27-2006, 12:03 AM   #6
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You can also pick up some buttermilk powder at the grocer. It keeps well and takes to baking quite well too. You can find it with the powdered milk.

Phil
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