For this creamy and briny soup I recommend using salty and not sweet dill pickles. If you have a Polish grocery store in the area, get their Polish pickles, and if not - this is what I use. One of my readers also recommended Bubbies kosher dill pickles found in a refrigerated section of most grocery stores. A word of advice: for this recipe I don't recommend Trader Joe's dill pickles. They are too vinegary and might ruin the taste of the soup.