SOLUTION: If a 20 lb Turkey takes 3 hours to fully cook at 350 degrees, how long do you need to cook it at 250 degrees? Happy Thanksgiving!

Question 536330: If a 20 lb Turkey takes 3 hours to fully cook at 350 degrees,
how long do you need to cook it at 250 degrees?
Happy Thanksgiving!
Found 2 solutions by Alan3354, april4869:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
If cooking time is linearly related to temperature, which is not the case, it's more likely to be related to absolute temps than Fahrenheit.
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350 F = 841 R
250 F = 741 R
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3*841 = t*741
t = 3.4 hours
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If you cook it at 0 F, it'll take 5.13 hours. Good luck with that.
Answer by april4869(19) (Show Source): You can put this solution on YOUR website!
I'm not sure if this is a math problem, or just cooking in general. But from personal experience it is not a good idea to cook the bird at a lower temperature, you risk more infection and less chance of it reaching its proper internal temperature of 165 degrees.
The rules of cooking a turkey go as follows:
Here is an approximate turkey cooking time guide for roasting at 325 degrees F. from the USDA:
8 to 12 lbs: 2 3/4 to 3 hrs
12 to 14 lbs: 3 to 3 3/4 hrs
14 to 18 lbs: 3 3/4 to 4 1/4 hrs
18 to 20 lbs: 4 1/4 to 4 1/2 hrs
20 to 24 lbs: 4 1/2 to 5 hrs
For 250 degrees, I would double your cooking time..depending on the size of your bird. And I would most definitely check the internal temp before eating.
I recommend this site for you to read if you want to know more..and Happy Thanksgiving!
http://busycooks.about.com/od/thanksgiving/a/unsafeturkeymet.htm
If this is a Math problem, just send me a little note, and I'll edit my answer:)
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