1 head of onions
1 tsp salt
Onion is peeled, rinsed with water and with a knife is made conical hole of a flat side, without reaching the lower end. Place in a cup with a small mouth, so that it can onion does not fall into the cup, and the stand top. Pour into a hole salt and put in refrigerator to stand for several hours (I always put it on the evening and the next day you placed the juice).