picromel

from The Collaborative International Dictionary of English v.0.48

Picromel \Pic"ro*mel\, n. [Gr. ? bitter + ? honey: cf. F.
   picromel.] (Old Chem.)
   A colorless viscous substance having a bitter-sweet taste.
   [1913 Webster]

   Note: It was formerly supposed to be the essential principle
         of the bile, but is now known to be a mixture,
         principally of salts of glycocholic and taurocholic
         acids.
         [1913 Webster]