The Marshmallow Castle, Alquimia. Founded in 2000 by owner José Pelluz, boasts of a wide array of experience in the world of confection, specialising in creating the finest marshmallow and jellies details with experience in the national market since 1986. We are based in Murcia, in the south of Spain, home to a large percentage of the world’s production of marshmallow.ALQUIMIA MURCIA S.L.Confectionary