Sikh temples, or gurdwaras, are primed to quickly and efficiently produce large quantities of food for hundreds of people. That’s because every gurdwara has a langar, or communal kitchen, where volunteers regularly cook fresh vegetarian meals to serve to congregants ― and any visitor who shows up at the door.

While most American gurdwaras have paused communal worship services due to the coronavirus pandemic, some gurdwara kitchens are still running.

Sikh volunteers in New York City, Los Angeles, Seattle and other cities have prepared and distributed thousands of meals from gurdwaras over the past few weeks, according to United Sikhs, the humanitarian group organizing a global langar effort. Volunteers have also delivered groceries to those who call in to a dedicated hotline or request help on a website ― adapting the tradition of langar to a modern-day pandemic.

“Filling somebody’s stomach who is in need and who cannot get food, this concept spread in Sikhism from Day 1,” Hardayal Singh, United Sikhs’ director of advocacy, told HuffPost. “Serving humanity is serving God.”

In New York City, the current epicenter of the crisis in the U.S., United Sikhs is part of a group of more than 60 charitable organizations that provide disaster readiness, response and recovery services to communities. In mid-March, Singh said he received an urgent request from the city’s Office of Emergency Management for vegetarian meals.

On March 23, United Sikhs volunteers gathered in the kitchen of the Sikh Center Temple in Queens Village to start cooking. Working in shifts and wearing face masks and gloves, they made big batches of rice, chickpeas, mixed vegetables and rasmalai, an Indian sweet. They repeated this days later on March 26. In the end, they managed to pack 30,000 meals, Singh said.

The city then distributed the meals to vulnerable populations, including homebound seniors and those unable to afford meals, a city spokesperson confirmed to HuffPost.

Since then, the Sikh volunteers have been answering meal and grocery requests that come in through United Sikhs’ hotline, delivering to homes in New York City’s boroughs and suburbs. Singh said the New York City team is delivering more than 500 meals per day.

In Southern California, the Gurdwara Sahib Riverside has been working hard to fulfill meal requests from the cities of Riverside and Moreno Valley. The gurdwara has also been delivering meals to local law enforcement and health care workers. After starting its COVID-19 response with 675 meals on March 25, the temple has expanded its daily output, hitting 1,400 meals on April 5.

Meetan Kaur, a United Sikhs associate director based in Los Angeles, said volunteers with her organization have been making door-to-door deliveries of food and other necessities since mid-March.

This weekend, they received a request for breakfast meals from an Orange County homeless shelter. Kaur approached the Gurdwara Singh Sabha in Buena Park for help because it was near that shelter. About 15 volunteers assembled at the gurdwara on Saturday and Sunday morning to cook and pack Indian-style breakfast burritos, samosas and gulab jamun, an Indian dessert. They produced 300 meals each day, Kaur said.

Courtesy of Meetan Kaur/UNITED SIKHS United Sikhs volunteers prepared meals at California's Buena Park Gurdwara to deliver to The Courtyard Shelter for the homeless in Santa Ana.

The concept of the langar is central to Sikhism. The practice emerged in Punjab (a region that is currently split into modern-day India and Pakistan) about 500 years ago. According to tradition, Sikhism’s founder, Guru Nanak, was given some money by his father to go into the city, start a business and make some profit. On the way, the guru spotted a group of hungry men and decided to use his father’s money to buy and serve the men food. His father was angry, but the guru explained that good deeds are a worthy investment.

Today, langar is an expression of the Sikh principle of equality. The langar meal is usually vegetarian, to ensure that people from many different faiths can participate. Regardless of religion, race or social class, attendees sit side-by-side on the floor and are served from communal pots.

NARINDER NANU via Getty Images Sikh devotees eat a communal vegetarian meal, known as langar, in a hall at the Golden temple in Amritsar in 2015.

Gurdwara chefs and langar volunteers in the U.S. have to be ready to cook meals every time there is a worship service, regardless of whether 500 people are coming or just 20, according to Gurvinder Singh, international humanitarian aid director for United Sikhs.

“Literally every time you congregate, you’re cooking meals,” he told HuffPost. “It’s such an integral part of our faith.”

Being Sikh is “not just about the turban and the facial hair or the prayers,” Gurvinder Singh said. “It’s also about community involvement, community engagement, community activism. That’s absolutely a requirement.”

As a result of the global spread of COVID-19, efforts to either pack langar for large groups or organize home deliveries of groceries and other essentials are taking place in India, Canada, Australia and Britain, Gurvinder Singh said.

He said the group has been getting requests for food through its national hotline from states such as Utah and Minnesota, where there aren’t large Sikh communities. In those cases, the team scours its volunteer base for local contacts who could step in, he said.

“We can’t serve everybody. Probably not. But we’ll do our best, God willing,” he said.