A bowl or pot or lota with a pipe-like opening is used for this kriya. Dissolve some salt in lukewarm water and fill the pot with this water. Raise the nostril that is active at the time of breathing towards one side and fit the pipe's mouth into it. Open the mouth and start breathing through it. Now tilt the pot gradually in such a manner that the water goes inside the nostril. The water should come out through the second nostril as it is at a lower level. Nowrepeat this process by putting the pipe in the second nostril.
When doing it. never use your nose for breathing.
Bhastrlka Pranayama is a must atter Jal Neti. To do this bow a little forward and move the neck right and left; up and down. and then do Bhastrika, so that the nose gets completely clean and dry. No trace of water should be allowed to remain inside the nostrils.
Mter you have mastered this technique completely, you can practise drinking water or milk through the nose. Drinking of milk or water through the nose has specific advantages. It cures all brain ailments and sharpens the intellect. The ailments of eyes, ears, nose, throat are cured and sleeplessness removed. It also improves the eye sight.