NOVELTY - Manufacturing methyl ester and separating the methyl ester from glycerin, comprises: providing a feed source containing triglyceride; blending an alcohol and a catalyst with the feed source to produce a reactant mixture; heating the reactant mixture; reacting the reactant mixture to produce a product mixture; blending a polymer with product mixture; heating product mixture; precipitating a glycerin fraction from a methyl ester fraction; separating and recovering the glycerin fraction from the fraction; and recovering glycerin fraction.    USE - The method is useful for manufacturing biodiesel, which is useful in petroleum diesel for vehicle fuel.    ADVANTAGE - The method produces biodiesel with improved yield in reduced number of steps.    DETAILED DESCRIPTION - Manufacturing methyl ester and separating the methyl ester from glycerin comprises: providing a feed source containing triglyceride, where the feed source is substantially water free; blending an alcohol and a catalyst with the feed source to produce a reactant mixture comprising of alcohol, pretreated feed source and catalyst, the reactant mixture being substantially water free; heating the reactant mixture to a predetermined reaction temperature; reacting the reactant mixture in a substantially non-polar and water free environment for a predetermined reaction time to produce a product mixture comprising of methyl ester, glycerin, alcohol and catalyst; blending a polymer with the product mixture, where the polymer is polydimethylamine-epichlorohydrin having a cationic charge density of 40-60% and a molecular weight of 10000-1000000, poly-diallyldimethylammonium chloride having a cationic charge density of 40-60% and having a molecular weight of 10000-1000000, acrylamide/ethanaminium,N,N,N-trimethyl-2-((1-oxo-2-propenyl)oxy)-, chloride copolymer having a cationic charge density of 4-12% and a molecular weight of 40000000-10000000, polydicyandiamide having a cationic charge density of40-60% and having a molecular weight of 3000-150000, and sodium acrylate acrylamide copolymer having an anionic charge density of 25-75% and a molecular weight of 8000000-28000000, preferably 8000000-12000000; heating the product mixture to a predetermined separation temperature; precipitating a glycerin fraction from a methyl ester fraction; separating the glycerin fraction from the methyl ester fraction; recovering the methyl ester fraction; and recovering the glycerin fraction.