We tend to favor pickles that are bright with acid and low on sugar; anything labeled "half-sour" usually fits the bill. If using sweeter pickles, add a bit more vinegar and salt.
The chicken and vegetables are strained out for a clear soup. If you'd like, save some chicken and vegetables to serve along with the matzo balls in the soup.
The secret to this super-flaky pastry is to grate frozen butter into the flour before incorporating it into the dough. Serve these hand pies warm, either as an appetizer or as dinner with a big green salad...