Sewa (Voluntary Service)
Whoever has good destiny inscribed on his forehead, applies himself to Seva - selfless service" (Guru Granth Sahib: Paanaa:1142 Line : 4 )
So it is not only in our acts of service at the Gurudwara, or our involvement in charities, helping the homeless and infirm, housing the earthquake victim, that we perform Seva. We can worship God, and perform Seva in our everday activities. Getting up in the morning, going to work and performing our tasks. Going to college and studying for exams. Coming home and cooking and cleaning. Every single mundane activity can be an act of Seva. Keeping in mind your intentions, the reasons for living and helping others, you can realise your status as an ambassador for Waheguru, an agent of truth and love. Herein, God is present in our lives, and we can extend the concept of Seva to include all that we do. Everything is a manifestation of the truth, and our very lives become an affirmation of that. Even if you do not pray every day, and cannot visit the Gurudwara as often as you would like, keep the Guru's name on your lips and perform the best you can. Because those things that keep us busy: our job, our families, our love of football, our passions, our hobbies, our friends, our music: these are things we should pursue to excellence, to the fullest of our abilities, and with Waheguru in our heart. They are all part of the holy life we lead. Help those in your vicinity. You will be touching the Divine.
1. Seva is a prominent part of Sikh religion. Illustrative models of voluntary service are organised for imparting training, in the Gurdwaras. Its simple forms are : sweeping and plastering the floors of the Gurdwara, serving water to or fanning the congregation, offering provisions to and rendering any, kind of service in the common kitchen-cum-eating house, dusting the shoes of the people visiting the Gurdwara, etc.
a. Guru Ka Langar : The philosophy behind the Langar (Guru's kitchen-cum-eating-house) is two-fold : to provide training to the Sikhs in voluntary service and to help banish all distinction of high and low, touchable and untouchable from the Sikhs' minds.
b. All human beings, high or low, and of any caste or colour may sit and eat in the Langar. No discrimination on grounds of the country of origin, colour, caste or religion must be made while making people sit in rows for eating. However, only Amritdhari Sikhs can eat off
I think you mean is sewa gave out in langar?
In that case, then yes. Sewa means giving out food for pleasure of others.
Guru Nanak Dev
By doing volunteer work around their communities, help cleaning the gurudwara, serving langar, and volunteering to make langar.
Sikhs pray, sing devotional songs (known as a shabad), reflect and contemplate on the words of the their Gurus, and perform langar sewa (Community Kitchen). They also read the Sikh holy book called the Guru Granth Sahib.
Aap ke Sewa Main 
Sewa taiwana was created in 1911.
Sewa Beats was created in 2000.
it is performed by most Sikhs who are capable of completing sewa (seva)
Matru Sewa Sangh was created in 1921.
Deergha Sewa Padakkama was created in 1972.
Sikhs will read the Guru Granth Sahib, and then bow down, and pay offerings to it in the Golak. They will then take their seat again and others will follow. All people of all religions are welcomed, but only Sikhs may worship the Guru Granth Sahib. After everybody has prayed to the Guru, they will be invited down into the Langar. The Langar is a free community kitchen which offers all people to sit down and eat with the Sikhs. They only serve vegetatious food, as all Sikhs are vegetarians.
Langar Khana or Langar-Ghar
The people who worship in the gurdwara prepare the langar.