Grill until husks are charred and kernels are tender, about 10 minutes:
- 4 ears corn, all but innermost layer of husk removed, silk trimmed
Remove corn from grill and discard husks and silk.
Whisk together and drizzle over corn:
- 6 tablespoons butter, melted
- 1/2 teaspoon lime zest
- 2 tablespoons lime juice
- 3/4 teaspoon salt
- 1/4 teaspoon pepper