Boil drumstick and corn kernals ina 1glass water and make 3-4whistles.Add salt ginger and asofoetida. Let it cool.Now take a mixture in a jar with water and churn and strain with strainer in a sauce pan.Put 3-5min.on a mid flame stir well. Add lemon juice pepper powder and serve hot. Add some corn kernals and chopped corriender.Healthy soup is ready.