Where does “Zigeuner sauce” come from?

Zigeuner sauce (English) comes from German Zigeuner, from Byzantine Greek ἀθίγγανος.

Ancestry of “Zigeuner sauce”, step by step

StepLanguageWordMeaning
1GermanZigeunerGypsy, member of the Roma, Romani person; member...
2Byzantine Greekἀθίγγανος
Every word from Byzantine Greek ἀθίγγανοςEvery word from German Zigeuner