Take bitter gourd and wash it well. Cut them in half, scoop out the seeds. Chop it into small pieces.

Take this in a bowl, add in 1 tsp of salt over this and mix really well with your hands. Set this aside for 10 to 15 mins.

Now chop a apple, remove the seeds and set aside. Now take the bitter gourd and squeeze it in your hands, the juices will come out, discard it. 

Take the squeezed bitter gourd in a blender, add in green apple, chilli, ginger and puree smoothly adding some water.

Strain this, add in lemon juice and salt. Mix well. Add more water if too thick.