MethodIn a small bowl, mix butter, coriander, chili powder,lime rind and lime juice until smooth. Spoon onto plastic wrap; shape into log and wrap tightly. Or pack into small serving bowl, smoothing top. Refrigerate until firm. (Refrigerate for up to 2 weeks).
Meanwhile, Grill husked cobs over medium heat for 15 to 20 minutes; or soak unhusked cobs in water for 20 minutes, then grill for 15 to 20 minutes. Serve with lime chili butter.