This article is a presentation of mentalization-based supervision with regard to focus, goals and means. The article is based on current theory of mentalization, and clinical practice with mentalization-based supervision. It presents a dimension to be considered in mentalization-based supervision, where the goal of stimulating mentalization is always in focus. This is illustrated in a sequence from a supervision session. It is possible to determine what mentalization-based supervision is and extract what makes it different of other psychotherapy supervision.