Langar (Punjabi: ਲੰਗਰ) (kitchen) is the term used in the Sikh religion for the common kitchen/canteen where food is served in a Gurdwara to all the visitors, without distinction of faith, religion or background, for free.
At the langar, mostly only vegetarian food is served, to ensure that all people, regardless of their dietary restrictions, can eat as equals. The exception to vegetarian langar is when Nihangs (in India) serve meat on the occasion of Holla Mohalla, and call it Mahaprasad. There are also variations on langar, for example at Hazur Sahib, where meat is included.
Langar was first started by Baba Farid, a Muslim of the Chishti Sufi order. It became a common practice amongst Sufi Muslims in South Asia and it was later adopted by Sikhs. In Sikhism the practice of the langar, or free kitchen, is believed to have been adopted by the first Sikh Guru, Guru Nanak. It was designed to uphold the principle of equality between all people regardless of religion, caste, colour, creed, age, gender or social status, a revolutionary concept in the caste-ordered society of 16th-century India where Sikhism began. In addition to the ideals of equality, the tradition of langar expresses the ethics of sharing, community, inclusiveness and oneness of all humankind. "...the Light of God is in all hearts."
After the Second Sikh Guru, the institution of langar seems to have changed, somewhat, and meat seems to have been excluded from this institution. The reason cited for this by historians is the accommodation of Vaishnavite members of the community.
The institution of Guru ka langar has served the community in many ways. It has ensured the participation of Sikhs in a task of service for mankind. Even Sikh children help in serving food to the people (Sangat). Langar also teaches the etiquette of eating in a community situation, which has played a great part in upholding the virtue of equality of all human beings and provides a welcome, secure and protected sanctuary.