Offering to the Spiritual Guide (OSG) is a special Guru yoga of Je Tsongkhapa in conjunction with Highest Yoga Tantra. The main practice is relying upon the Spiritual Guide, but it also includes all the essential practices of the stages of the path (Lamrim) and training the mind (Lojong), as well as both the generation and completion stages of Highest Yoga Tantra. This practice includes a tsog offering.