Combine pork, 2 green onions (finely chopped), soya sauce, garlic powder, seasoning salt, and 1 egg in a bowl. (can add water chestnuts now too if you like). let stand for 15 min, or until broth is ready. In a big pot, add 3 cans of broth with equal parts of water. Add the other 2 green onions. (If you want to add other veggies, now is t he time to do it)Bring to a boil, then turn down to low heat. Now put on a med. size pot of water with a pinch of salt in it, and bring it to a rapid boil. In a small bowl, seperate the the egg white (this is the part you want). Add a couple drops of water to the egg white. (this is going to seal the wonton covers). Seperate the wonton covers and place a few at a time on the counter. Place 1/2 tsp amounts of pork mixture in the middle of each wonton. Rub egg white along 2 of the covers edges. Fold corner to corner, then corner to corner again. Place in boiling water for about 2 1/2 min, or until the have floated for about 1 minute Then place in broth. Repeat until all wontons are made. Enjoy!