Per AsianResearch.org's article The Ancient Theory Behind Chinese Food:


  Generally
  speaking, foods that have a higher water content are considered cool,
  or yin, in nature. These are often foods that are boiled or steamed.
  Foods that have a higher energy content, particularly from fat, are
  considered warm, or yang, in nature. These are often foods that are
  fried or roasted.
  
  [...] 
  
  From [Chinese traditional element theory] comes the idea of the five flavours −
  bitter, sweet, spicy, salty and sour.
  
  These flavours are subdivided into yin and yang. Sweet and spicy foods
  are considered to be yin, while bitter, sour and salty foods are
  considered to be yang. The five elements also correspond with the
  colours red, yellow, white, blue and green, which are all considered
  when choosing ingredients.


What is the "hot" and "cold" category that Chinese culture separate their food into?
I just wonder, if it's possible to initialize and use DX11 or DX9 for offscreen rendering only - meaning with no attached window. 
My intention is to do some GPU benchmarking before opening actual window. In this benchmarking some test scene is rendered, but should not be visible. (Actually depending on the benchmark score different windows are opened)
