Field studies on Euryale ferox Salisb. using fresh mature seeds were carried out in experimental plots of Research Centre for Makhana, Darbhanga. Production of fresh seeds has been estimated to be 3.0 t/ha. Biochemical analysis of fresh seeds revealed 55.16% available carbohydrate, 25.73% protein, 12.80% moisture, 4.68% fibre, 1.08% ash and 0.52% fat. The seeds were found to contain amylose 20.22%, P 65.41 mg/100 g, K 36 mg/100 g, Na 47.32 mg/100g, Fe 0.96 mg/100g, Mn0.92 mg/100g, Cu 0.26 mg 100 g and Zn 0.83 mg/100 g.