Wednesday, November 21, 2012

Roasting (rotisserie) p38

Goal:  balance of heat reaching the surface of the food so it matches the rate at which heat seeps into the interior...
- too close and too much heat on surface and burns + raw...
- too far and beat cooked by no color on skin
- parameters is the distance from heat source and the speed in which to spin the food


 Bigger roasts cooked farther from fire, smaller ones closer to fire

Time it  takes for  heat to penetrate to the  center  of a  piece of food varies  in proportion  to the  square  of the food 's  thickness.

-- double the size of food = 4x the amount of time needed (not 2x) -- example: 25 cm diameter turkey takes 4x more time to cook as a 12.5 cm diameter bird


Intensity of heat from a  blazing fire  varies  by the  inverse  square  of the  food's  distance  from the  fire
-- double the distance to the food and the heat on the food is 1/4 (not 1/2) 

**parts of meat overcooking? cover it with reflective foil (reflective side out)

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