In a pot, brown the chicken pieces (cut into eighths) in a little olive oil over low heat with the whole garlic cloves, the bay leaf and a pinch of salt, until the liquid they release evaporates.
Add 2 tbsp vinegar and a little freshly ground pepper.
Pour in 1.5 liters of water and cook for 15-20 minutes.
Remove from the heat and lift out the pieces of meat with a slotted spoon.
Dip each piece in beaten egg, then in breadcrumbs.
Fry the breaded pieces in hot oil until golden and crisp.
Return the breaded pieces to the pot with the remaining broth.
Season the broth with another 150 ml vinegar and salt to taste.
Let cool, then chill in the fridge for at least 2 hours before serving - the dish gets even better after a day.