For EC: Science of Stirring notes

30
Jul/10
0
  • converting ice @ 0 degC to water @ 0 degC requires 80 calories / mole
    • takes longer cool a drink with colder ice
  • no temp difference between center and surface of a *dry* cube of ice (< 0.2 degC)
  • speed of stirring works the way you’d expect (faster stir cools faster; disregard aeration in this context)
  • “chilling only comes with dilution”
  • spinning (in a lettuce spinner, say) water off ice removes 7-10% of weight (from ice in the well; ice from the freezer doesn’t have much melt on the surface)
  • constant stirring is more efficient both in terms of temp and dilution
    • leaving a drink on ice doesn’t really lower the temperature notably as long as you’re likely to leave it to make the rest of the order: just stir it, then move to the shaken drinks
  • chill mixing glasses in order to avoid their leeching calories (heat = energy) from your drink
    • less relevant for tins, as they’re far thinner and metal changes temp far more rapidly than glass
  • cf quotes in prior post
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