How to pickle cucumbers? Pickling cucumbers involves preserving cucumbers in a brine solution typically made of vinegar, water, salt, and spices. Cucumbers are usually washed and sliced before being placed in sterilized jars with the brine. Common spices include dill, garlic, and mustard seeds. The jars are sealed and left to ferment for several days to develop flavor. Pickled cucumbers, also known as pickles, are versatile and can be enjoyed as snacks, sandwich toppings, or alongside meals. They offer a tangy and crunchy addition to dishes and are popular in many cuisines worldwide, notably in American delis and Eastern European cuisines.