For this, go to your local Polish shop and buy the lactose-fermented cucumber dill pickles that they often sell in plastic bags in the fridge section. These pickles aren't pickled in vinegar.I tend to start soups the day before as I like them to 'mature' overnight. So I made it Friday, added the sour cream just before serving on Saturday, then added water and more pickles to make it bigger, and serve it Sunday.