No matter where in the world a Malayali calls home, Onam brings them back to their roots. Celebrated during Chingam, the first month of the Malayalam calendar, which falls between August and September, the festival is marked with immense joy in every corner of the globe, and it is a time when differences melt away to make room for togetherness.

Legend says that every year during Onam, the beloved King Mahabali visits his people. He is welcomed by vibrant floral carpets (Pookalam) and sacred clay pyramids (Thrikkakkarappan) placed at every doorstep, bringing a wave of magic, unity, and nostalgia to every home.

No Onam is complete without the Onam Sadhya, a traditional family feast of 15 to 20 vegetarian dishes served together on a banana leaf alongside rice.

But what happens when you are celebrating Onam 5,000 km away?

The problem with a Sadhya abroad

The scale of the Kerala diaspora explains why this matters. The Kerala Migration Survey 2023, conducted by the International Institute of Migration and Development and the Gulati Institute of Finance and Taxation, estimates 2.2 million emigrants from Kerala, and found that two out of every five households in the state have a non-resident Keralite. Every Onam season, demand for a traditional Sadhya spikes across Indian restaurants, ethnic grocery stores, and Malayali community organisations abroad. 

Anyone who has tried making a Sadhya from scratch knows it is a marathon. Recreating 15 to 20 separate dishes, from the tangy bite of Injipuli to the rich comfort of Avial and the slow-cooked sweetness of Payasam, takes six to eight hours of intense kitchen labour.

For a non-resident keralite (NRK) working a full-time corporate job in London, a healthcare shift in Dubai, or attending classes in Toronto, finding that kind of time on a weekday or a busy weekend is almost impossible.

Then comes the ingredient problem. Finding fresh Nendran plantains, authentic drumsticks, or proper Matta rice in overseas supermarkets can feel like a treasure hunt, and during peak festive weeks the prices of these specialty ingredients climb sharply. Set against six to eight hours in the kitchen and a basket of speciality ingredients at festive prices, a kit stops looking like an indulgence and starts looking like the sensible option.

It has left NRKs asking a simple question: is there a way to enjoy a real, authentic Onam Sadhya abroad without spending half a day in the kitchen and a fortune on ingredients?

The science of the freeze

The answer did not come from compromise. It came from food technology. Kerala's food manufacturers realised that to bring the Sadhya to the world, they had to reimagine how food travels.

They turned to a preservation principle first observed by Clarence Birdseye in the 1910s. While living in Labrador, Birdseye watched Inuit fishermen let their catch freeze instantly in the frigid air, and found that the fish still tasted fresh when it was eventually cooked. He recognised that speed, not simply temperature, was what mattered: slow freezing creates large ice crystals that damage the cell structure of the food, while rapid freezing preserves it.

Kerala's food manufacturers now use the same science to preserve the intricate flavours of Kerala cuisine.

Production starts 60 days before Onam, leaving time for cooking, shipping, and delivery so that the meals reach NRK households before the festival. Manufacturers use AI forecasting tools to predict how many meals each country will need, avoiding both wasted food and empty shelves.

Tonnes of fresh local vegetables, including yam, ash gourd, raw banana, and drumstick, are bought directly from farmers across the Ernakulam district. Workers sort the vegetables by dish, then feed them into heavy-duty mechanical processors that cut them to the size and shape each dish requires. This ensures uniform heat transfer during cooking.

Recipe formulation is equally critical. A Sadhya features many dishes with distinct oil, water, and acid ratios, and each one follows its own thermal regime.

Right after cooking, the dishes enter blast freezers at minus 40°C, locking in the aroma, the coconut oil richness, and the fresh flavour. Computer vision inspects colour, consistency, and packaging integrity in real time.

From Cochin Port to the local freezer

The packaged meals are then loaded into refrigerated shipping containers at Cochin Port and held at a steady minus 18°C to minus 20°C for the voyage. IoT sensors inside the containers monitor internal temperature, air circulation, and humidity, sending alerts to logistics teams the moment anything drifts.

On arrival at destination ports, the frozen packages are packed into passive thermally insulated boxes and moved in refrigerated trucks to Indian supermarkets and stores, where they are held in deep-freeze cabinets.

E-commerce platforms and quick-commerce apps have made the ready-to-eat Sadhya discoverable far beyond traditional NRK grocery stores, and online platforms let customers order full Sadhya kits. Because the meals are frozen, buyers do not have to wait until Onam morning. Stock sells out quickly, so many pre-order and schedule delivery days ahead to make sure the kit arrives well before the festival.

What the growth of these kits suggests is a shift in attitude. A frozen Sadhya was once an obvious compromise. Today a meaningful share of the diaspora treats it as a legitimate way to keep the tradition, valuing the emotional connection to home alongside the convenience.

What Kerala's food exporters can learn from this

For anyone trying to take a regional product to a global market, the ready-to-eat Sadhya kit is a good case study to analyse. Kerala never had a recipe problem. It had a shelf life problem, and once technology solved it, accurate volume forecasting and careful timing did the rest, putting Onam Sadhyas in the supermarket freezers of Dubai and Toronto before the festival.

The other half of the story is what the buyer is actually buying. This is a once-a-year purchase tied to a single feeling of nostalgia, and what sits on the banana leaf has to match a memory. That changes the priorities. Getting the Injipuli right matters more than shaving a rupee off the unit cost.

Kerala's food manufacturers did more than build an export market. They showed that heritage products can travel without being diluted, and that the barrier is often logistics rather than taste.

Sources

Kerala Migration Survey 2023, International Institute of Migration and Development and Gulati Institute of Finance and Taxation. iimad.org/wp-content/uploads/2024/06/KMS-2023-Report.pdf

History.com, How the Modern Frozen Food Industry Took Inspiration from Inuits. history.com/articles/history-of-frozen-food-birdseye

National Inventors Hall of Fame, How Did Clarence Birdseye Shape the American Diet? invent.org/blog/inventors/clarence-birdseye