This study reports on the comparative analysis of two (large and small) varieties of Cyperus esculentus tubers and the utilization of the By-product. Proximate analysis of the tubers using standard methods showed that the large variety contains: 54.74% carbohydrate, 30% fat, 7.01% protein, 6.30% fiber and 1.95% ash while the small variety contains : 41.76% carbohydrate, 40% fat, 9.19% protein, 6.80% fiber and 2.25% ash. The mineral elements, Ca, Mg, K, Na, Fe, Zn and Cu were determined by atomic absorption spectrophotometric method. Phosphorus was assayed colourimetrically as the hosphormolybdovanate complex at 450nm. The reducing sugar as D-glucose was also determined colorimetrically at 540nm and it was found to be362.50 and 372.50 mg/ml for the large and small varieties respectively. Starch and oil were extracted from the tubers and physicochemical properties assessed. The amylase content of the starches were 22.60 and 28.27% for the large and small varieties respectively. The small variety is richer in mg, K, Zn and phosphorus while the large variety is richer in Fe, Na and Ca. Commercial lecithin obtained as a by-product of starch extraction was utilized as an emulsifier in the body cream.