Qual é a diferença entre as picles kosher dill e os picles dill poloneses?

Esses são dois processos diferentes. Infelizmente a língua inglesa não tem duas palavras para o resultado e ambas são chamadas "pickles".

Normalmente pickles poloneses "kiszony" devem ser feitos com: pepinos, endro, rábano fresco, alho e sal. Sem vinagre

Os picles kosher, chamados em polonês "korniszony", são feitos com salmoura que contém vinagre.

Depois de um rápido google, parece que os pickles poloneses poderiam / conteriam mais especiarias.

De ehow:

Due to their similar origin, Polish and kosher dill pickles resemble one another in preparation, making it difficult to distinguish between the two -- that is, until you taste them. While kosher dills are made with garlic, Polish dills are often made with more pickling spices, giving you a zesty, peppery pickle.

De nossa vida cotidiana:

Polish dills contain more spices and garlic than either traditional dill pickles or kosher dill pickles. These pickles tend to be peppery and may be flavored with mustard seeds. Their flavor is similar to the kosher dill and they are served in the same way.