Pickled Olives, Pickled Vegetables
Pickled olives and pickled vegetables – salty olives – are usually permitted, except those containing vinegar.
Lactic acid, if added, is considered parve.
Romeo Ficacci srl – kosher production of pickled olives, lupins and salted capers http://www.ficacci.com/articolo01.asp?id=64 Rabbino Menahem Haddad (Brussels).
Not kosher if contain vinegar.
Lactic acid is regarded as Pareve (Rav Somekh).