In a bowl, mix all the ingredients together. Lay a large piece of plastic wrap on your counter. Spoon the butter into the middle of the wrap, in a long rope-shape. Roll the plastic wrap over the butter, gently forming it into a log, tucking the ends under. Pop it into the refrigerator or the freezer and chill until hard and set.
When ready to use, just slice a coin off the butter and put it on top of grilled steaks, fish, or poultry.