Carefully peel back (but do not remove) the husks and remove the silk. Replace the husks and tie with kitchen twine to hold it together.
Soak the corn, husks on, in water for about an hour.
Soften or melt the butter and combine with salt and pepper.
Place corn on a hot grill or grill pan for about 15 minutes, turning every few minutes, until the husks have a nice char.
Carefully peel back the husks and place corn directly on to the grill for about 5 minutes, turning every 1-2 minutes until the corn has a nice char. Brush with the butter mixture.
Brush again with butter before serving and sprinkle with freshly chopped parsley (optional).