This monthly practice takes place on or close to the 29th of each month, so-called Protector Day, and consists principally of prayers to our Dharma Protector, the Wisdom Buddha Dorje Shugden.
A Dharma Protector is an emanation of a Buddha or Bodhisattva whose main functions are to avert the inner and outer obstacles that prevent practitioners from attaining spiritual realizations, and to arrange all the necessary conditions for their practice.
Dorje Shugden is a Dharma Protector, which means he specializes in helping us keep our minds off delusions and on Dharma. One way he does this is by helping us transform all appearances into the spiritual path, opening our wisdom eyes so that we know what to do with each situation as it arises, generating Dharma minds such as renunciation, compassion, or wisdom.
This practice includes a tsog offering, so you can imagine a vegetarian food offering with you if you wish.