Mixed pickles are pickles made from a variety of vegetables mixed in the same pickling process. Mixed pickles are eaten much like other pickles: in small amounts to add flavor and to accent a meal. Mixed pickles occur in many different world cuisines.In U.S. cuisine, a mixed pickle consists of vegetables typically including cucumbers, cauliflower, cut large onions, and bell peppers, as well as spices like garlic, dill, allspice, and chili peppers, suspended in vinegar.