Molasses

Viscous by-product of the refining of sugarcane, grapes, or sugar beets into sugar

Molasses, also called black treacle, is a viscous byproduct principally obtained from the refining of sugarcane or sugar beet juice into sugar. Molasses varies in the amount of sugar, the method of extraction, and the age of the plant. Sugarcane molasses is usually used to sweeten and flavour foods.

From Wikipedia, under CC BY-SA. More on occurri.