noun
molasses; black treacle
Technical term for the dark, viscous byproduct of sugar refining; used in food processing, fermentation, and animal feed.
廃糖蜜は発酵原料として利用される。
Molasses is used as a fermentation feedstock.
糖蜜 is a broader term for any thick syrup produced during sugar refining, while 廃糖蜜 specifically refers to the final residual molasses after maximum sugar extraction.
Compound of 廃 (hai, 'waste') + 糖蜜 (tōmitsu, 'molasses'), literally 'waste molasses'.