Slow-cooked food deserves good pickles. That's why I've been experimenting in the kitchen and I believe I've come up with a good version of pickled pearl onions, where they're even made from frozen pearl onions, so you can make them at any time of the year.
Put the pearl onions in a strainer to thaw before cooking.Put all the other ingredients in a pot and bring to a boil until the sugar is dissolved.Add the pearl onions and let them boil for about 4-5 minutes.Scald a mason jar/pickling jar in boiling water (possibly with a bit of Atamon), and pour the brine and pearl onions into the jar.Close the lid when they have cooled, and they can be eaten immediately.Enjoy your meal.