New bottles from cola cos to be 30% biomass-based. The next time you take a swig from a Coca-Cola bottle, it may well be ‘green’ — not in colour or content, but in composition. Coke will soon launch new bottles that are 30% biomass-based, said Asim Parekh, vice-president (technical), Coca-Cola India. Instead of petroleum, Coke will use ethanol, a derivative of molasses, to make part of the PET bottle. Molasses is a byproduct generated in large amounts by sugar mills. Industry sources said archrival Pepsi has similar plans for India, but the company remained tight-lipped.