Langar halls are also places of community where you can interact with strangers in your area and build sangat (similar to community). Most people would do sewa

Langar halls are also places of community where you can interact with strangers in your area and build sangat (similar to community). Most people would do sewa (help out) in langar and then eat. Also you cannot waste. People would eat down to last bit rice before handing back plates. The one who is taking Langar, the one who is serving, consider each other as Guru (Waheguru/God) doing both the serving and consumption of food. Washing the plates is the most imp sewa and usually that part of kitchen is always busy (people seek it).