Join my online French cooking classes : https://learn.thefrenchcookingacademy.com/p/get-started-with-french-cooking the Maitre D butter or more commonly called Herb butter is a French compound butter usually served in restaurant with grilled fish an Grilled meats. its easy to make you can keep it in the fridge or even freeze it.Ingredients needed:ButterSaltblack pepperFresh parsleylemon juice