Many sauces, mustards, relishes and pickles are considered as condiments. Mostly, gherkins are eaten with burgers. Gherkins can be made sweeter by adding some sugar to the vinegar or brine. Although, Dill pickles (flavored with dill stems) are typically sour. Herbs, such as rosemary, tarragon and sometimes mustard seeds, may be used to flavor gherkins.