On Wed, 12 Dec 2012 19:22:17 -0800, Mark Thorson <
nos...@sonic.net>
Obviously you don't/can't cook. No thermometer is marked 'boiling',
simply because there are many circumstances that play a part on at
what temperature water boils. However to calibrate the particular
thermometer in question by the instructions supplied the best one can
do is to calibrate it at the location where it will be used... if one
cares to make changes with interpolation by some chart that's a
choice, but totally unnecessary... there is no reason to have a
number, any mark will do at the point at which water boils at that
location. I wouldn't use that calibration method for a candy/frying
thermometer, sugar/oil behave differently from water. I'd consider
the mark at which water boils a point at which to interpolate
temperature for other substances. For numerical accuracy one would
need a standard for each temperature range desired. But cooking does
not require laboratory accuracy, a good cook uses all their senses,
most professional cooks never use a thermometer, they can tell the
condition of a food from visual, odor, sound, feel, and of course
taste.
My home heating thermostat is located in a center hallway, but I have
a thermometer in every room, simply because none of the room
temperatures are at the temperature shown on the thermostat because
each room is different in how it receives heat and maintains
temperature, all buildings are the same. And since my house has two
zones/two thermostats that complicates things further. I don't use
the numbers on the thermostat except as a rough guide, I made a mark
that best maintains the temperature I want in the rooms most important
to have a certain comfort level. Cooking the same... just because a
recipe says to roast something at 325º that doesn't mean that for ones
oven, the shape of the roast, and several other factors that's the
ideal temperature. I rarely cook a roast relying on a meat
thermometer, I get better results with oven temperature time and using
all my other senses. With cooking anything there are too many factors
involved to rely soley on temperature.