Langar

Langar (Punjabi) is the term used in the Sikh religion for the free, vegetarian-only foodserved in a Gurudwara. 

At the Langar, only vegetarian food is served to ensure that all people, regardless of their dietary restrictions, can eat as equals. Langar is open to Sikhs and non-Sikhs alike.

The exception to vegetarian langar is when Nihangs (in India) serve meat on the occasion of Holla Mohalla, and call it Mahaprashad. 

There are also variation on the Vegetarian Langar, for example at Hazur Sahib. 

Langar is also a common term used across various units in the Indian Army, when referring to a mess, especially when there is no building and the food is served in open air (or through temporary arrangements like tents).