instead of
Ersatz — eins an die Stelle des anderen
Ersatz — one in place of the other
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Statt Kaffee trinke ich heute Tee.— Instead of coffee I'm having tea today.
Colloquially "statt" often takes Dativ: "statt meinem Bruder" (instead of Gen "statt meines Bruders"). In writing and exams — strictly Genitiv. "anstatt" sounds more literary.