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Rate of evaporation

 
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yocona
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PostPosted: Fri Mar 18, 2011 12:29 pm    Post subject: Rate of evaporation Reply with quote

When reducing liquids, will they evaporate more quickly at a rolling boil? Or should I conserve on fuel and let the reduction proceed at a gentle boil?
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Dilbert



Joined: 19 Oct 2007
Posts: 1008
Location: central PA

PostPosted: Fri Mar 18, 2011 3:28 pm    Post subject: Reply with quote

technically the more heat you throw at the pot, the faster it will evaporate.

however comma, that may not be an optimum approach - because the high heat could scorch or burn the reduction.

most reductions are done a a gentle simmer.
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yocona



Joined: 18 Mar 2011
Posts: 47

PostPosted: Fri Mar 18, 2011 11:14 pm    Post subject: Reply with quote

Thanks, Dilbert. I was looking for the technical answer. I'm making a heavily reduced product in large batches with a reduction time of 6+ hours. The smell and appearance change several minutes before it is finished, so I know when it's time to turn down the flame and pull out the thermometer.
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