Opekta was a German pectin and spice company that existed between 1928 and 1995. It is notable for its Dutch operation being based in the building at Prinsengracht 263 that later became the Anne Frank
An Opekta advertising poster from Anne Frank's room in the Secret Annexe. "Nù zelf Jam maken met Opekta", roughly "Now make homemade Jam with Opekta"