1. Mix together all the ingredients for the devilled butter.
2. Divide the turkey into convenient portions or serving, remove the skin, and score the flesh deeply.
3. Spread lightly with the devilled butter and leave for 1 hour (longer if a highly seasoned dish is wanted).
4. Grill the meat for about 8 minutes, turning once, until crisp and brown.
5. Serve with piquant sauce.