Chili Lime Butter:
1 stick of sweet butter, softened
zest of 1 lime
zest of 1 lemon
1/4 tsp. salt
1/4 tsp. black pepper
1 tsp. chili powder
pinch of cayenne pepper
Place softened butter in a bowl. Add the rest of the ingredients, except corn, and mix until incorporated. Peel and clean corn.
Place cobs on a gas grill or barbecue with fire burned down to white coals, and turn corn frequently. Cook until nicely browned.
Slather hot grilled corn with chili-lime butter and serve immediately.