A distillation method for separating ethanol from a dilute ethanol containing feedstock comprising: (a) dividing the feedstock into two feed streams of unequal size; (b) preheating both the larger and the smaller of said feed streams; (c) introducing said preheated feed streams in parallel into a pair of analyzer columns; (d) maintaining a higher pressure in first analyzer column receiving said larger feed stream than in second analyzer column receiving said smaller feed stream; (e) withdrawing first hydrous ethanol streams from the upper portion of said analyzer columns and feeding it to an aldehyde column to separate an aldehyde free ethanol stream at the bottom portion and a technical alcohol stream at the upper portion of the column; (f) mixing between about three to about twelve parts of water or spent lees to one part of ethanol in said aldehyde free ethanol stream, preheating it and subjecting it to a low boiler column to separate a second hydrous ethanol stream from the lower portion and a technical alcohol stream from the upper portion of the column; (g) preheating said second hydrous ethanol stream and subjecting it to a rectifier column to obtained a rectified ethanol stream, wherein said rectified ethanol stream is treated with an elemental hydroxide to adjust its pH to between pH 7 and pH 11; (h) dehydrating said rectified ethanol stream using a dehydration unit to obtain an anhydrous ethanol stream, wherein said dehydration of rectified ethanol stream is achieved by means of a membrane separation technique, molecular sieve dehydration, or adsorption separation of water or a combination thereof; (i) introducing said anhydrous ethanol stream to a high boiler column to separate a technical alcohol stream at the bottom portion and a final anhydrous ethanol stream at the upper portion of the column; wherein said anhydrous ethanol stream is treated with an inorganic oxidising agent up to 30 PPM concentration, and (j) introducing said final anhydrous ethanol stream to a simmering column to obtain ethanol product streams by optionally adding water to said final anhydrous ethanol stream in various amounts. (a) dividing the feedstock into two feed streams of unequal size; (b) preheating both the larger and the smaller of said feed streams; (c) introducing said preheated feed streams in parallel into a pair of analyzer columns; (d) maintaining a higher pressure in first analyzer column receiving said larger feed stream than in second analyzer column receiving said smaller feed stream; (e) withdrawing first hydrous ethanol streams from the upper portion of said analyzer columns and feeding it to an aldehyde column to separate an aldehyde free ethanol stream at the bottom portion and a technical alcohol stream at the upper portion of the column; (f) mixing between about three to about twelve parts of water or spent lees to one part of ethanol in said aldehyde free ethanol stream, preheating it and subjecting it to a low boiler column to separate a second hydrous ethanol stream from the lower portion and a technical alcohol stream from the upper portion of the column; (g) preheating said second hydrous ethanol stream and subjecting it to a rectifier column to obtained a rectified ethanol stream, wherein said rectified ethanol stream is treated with an elemental hydroxide to adjust its pH to between pH 7 and pH 11; (h) dehydrating said rectified ethanol stream using a dehydration unit to obtain an anhydrous ethanol stream, wherein said dehydration of rectified ethanol stream is achieved by means of a membrane separation technique, molecular sieve dehydration, or adsorption separation of water or a combination thereof; (i) introducing said anhydrous ethanol stream to a high boiler column to separate a technical alcohol stream at the bottom portion and a final anhydrous ethanol stream at the upper portion of the column; wherein said anhydrous ethanol stream is treated with an inorganic oxidising agent up to 30 PPM concentration, and (j) introducing said final anhydrous ethanol stream to a simmering column to obtain ethanol product streams by optionally adding water to said final anhydrous ethanol stream in various amounts.