"Molasses" means the heavy, dark colored viscous liquid produced during manufacture of sugar containning, in solution or suspension, sugars which can be fermented, and includes the solid form of such liquid and also any product formed by the addition to such liquid or solid of any ingredient which does not substantially after the character of such liquid or solid; and shall also include substances containing sugars obtained from sugarcane known as black coloured gur and residual substances obtained from khandsari known as third sugar or raskat or sayar.