how to figure out cooking time

I seared by prime rib at 450 degrees for 30 minutes and then I was supposed to reduce the temp to 325 for an additional 3 hours. I forgot to turn down the temperature and caught my mistake 25 minutes into cooking. How much time should I reduce my cooking by?
Best Answer
It's hard to tell, since it depends on a lot of different factors. I would estimate that you should reduce the cooking time by about 20 minutes. For the future, I would recommend investing in a meat thermometer. Then you can tell when the meat is done without relying on oven temperatures and times.
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How do you calculate cooking?
Determine the total yield of the recipe by multiplying the number of portions and the size of each portion. Determine the required yield of the recipe by multiplying the new number of portions and the new size of each portion.How do you convert cooking times?
Refer to the amount of time that a recipe needs to cook on high and covert from hours to minutes (multiply it by 60) then divide by 10. For example, a recipe that needs to cook for 8 hours on low and 4 hours on high, you would take 4 hours and convert to minutes. 4 times 60 would give you 240 minutes.How do I calculate cooking time per kg?
In fact there are a few rules of thumb to consider when measuring the cooking time of meat in the oven: For poultry: For a chicken of 2 lbs to 3 lbs (1 kg \u2013 1.5 kg), allow 15 to 20 minutes per 300g, so aim for 1 hour on average.How do you adjust cooking times for different temperatures calculator?
How to adjust cooking times for different temperatures.- Work out the percentage difference in temperature. Start Temperature / End Temp = % Difference. ...
- Adjust Expected Time. Multiply initial time by the % Difference. ...
- Add a safety margin.
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