Bistre
Encyclopedia
Bistre is either: 1) A shade of gray, 2) A shade of brown made from soot, and 3) The name for a color
Color
Color or colour is the visual perceptual property corresponding in humans to the categories called red, green, blue and others. Color derives from the spectrum of light interacting in the eye with the spectral sensitivities of the light receptors...

 resembling the pigment. Bistre's appearance is generally of a dark grayish brown, with a yellowish cast.

Beechwood
Beech
Beech is a genus of ten species of deciduous trees in the family Fagaceae, native to temperate Europe, Asia and North America.-Habit:...

was burned to produce the soot, which was boiled and diluted with water. Many Old Masters used bistre as the ink for their drawings.
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