Three days before Onam, Kerala’s most recognisable feast is already appearing thousands of kilometres from home. In Delhi, restaurants are preparing banana leaves for elaborate vegetarian spreads. Mumbai has sadhyas promising 25, 30 and even 40-plus preparations. Bengaluru’s luxury hotels have turned the meal into a seasonal attraction, while Kolkata is hosting Kerala chefs and menus built around the state’s regional food traditions. This year, Thiruvonam falls on August 26. The interesting story, however, is no longer where one can find a sadhya outside Kerala. It is how completely the meal has travelled.
For generations, the Onam sadhya was principally a domestic and community ritual — an elaborate vegetarian lunch whose significance came as much from eating together as from what was placed on the leaf. Today, it is also a metropolitan restaurant event, sold by neighbourhood Kerala eateries, five-star hotels and contemporary restaurants to diners who may have no Malayali connection at all.
Few Indian festive meals have made that journey quite so successfully.
A meal that is more than a menu
A sadhya can look deceptively simple from a distance: rice surrounded by an extraordinary number of small servings on a banana leaf. But its structure is the reason transporting it is more complicated than merely collecting Kerala dishes on a restaurant menu.
A traditional spread can contain more than two dozen preparations. Rice sits at its centre, accompanied in different combinations by parippu, sambar, avial, olan, erissery, kalan, thoran, kichadi, pachadi, rasam, moru, pickles, puli inji, pappadam and banana chips. Payasam brings the meal towards its sweet conclusion.
There is choreography to it as well.
The banana leaf has an orientation. Different preparations occupy particular spaces. Courses arrive in a sequence. Rice may be replenished as different curries are served. The diner traditionally eats with the hand rather than cutlery.
That distinction matters because the sadhya was never conceived as a tasting menu consisting of dozens of independent dishes. Its flavours are designed to meet on the leaf.
Something sharp and gingery can be followed by something mellow with coconut; sourness meets sweetness, heat is moderated by yoghurt or buttermilk, and crisp banana chips and pappadam interrupt the softer textures of vegetables and rice.
The abundance is intentional. So is the sharing.
Onam commemorates the annual return of the legendary King Mahabali, whose reign in Kerala's popular tradition represents prosperity and equality. The feast consequently carries ideas of abundance, hospitality and community that extend beyond appetite.
That makes the modern restaurant sadhya an unusual commercial product: what is being sold is not simply lunch, but a condensed experience of a festival.
Kerala moves, the leaf follows
The first reason for the sadhya’s extraordinary mobility is straightforward: Malayalis moved.
Successive generations settled in Bengaluru, Chennai, Mumbai, Delhi and other Indian cities for education and work. Kerala associations, neighbourhood groups and restaurants helped festivals travel with them. Onam could be celebrated far from the family home, and food became one of the easiest ways to reconstruct it.
The pattern long predates the current restaurant boom. As far back as 2017, restaurant guides were already directing diners towards Onam sadhyas in Delhi, Mumbai, Kolkata, Chennai and Bengaluru.
What has changed is the audience.
The meal has increasingly escaped the boundaries of the Malayali community. In India's large cities, Onam season now draws diners who may know avial better from restaurants than family kitchens and for whom sitting down before a banana leaf is an act of culinary discovery rather than nostalgia.
That shift reflects a larger change in urban Indian dining. Regional cuisines are increasingly being presented on their own terms instead of being compressed into broad labels such as “South Indian”.
A diner who once understood southern food largely through dosa, idli and sambar can now encounter Kerala through olan and erissery; Mangaluru through kori rotti; Kodagu through pandi curry; or Andhra through gongura and regional chilli varieties.
The sadhya arrived at exactly the right moment for that curiosity.
From community hall to luxury hotel
Its success has created a paradox.
The sadhya is associated with communal abundance, yet it has also become a premium restaurant commodity.
That tension is particularly visible in Bengaluru this year, where the prices charged for hotel sadhyas have sparked a debate over whether a festival meal associated with inclusiveness is becoming a luxury dining experience.
The transformation is striking. A meal once assembled by extended families or large teams of cooks and eaten at home, temples and community gatherings can now arrive with advance reservations, fixed dining slots and luxury-hotel service.
Mumbai illustrates the other end of the expansion. Restaurants across the city are advertising large Onam spreads this year, including some establishments staging their first sadhya. One Powai restaurant, for instance, has built a 25-plus-item menu around the conventional banana-leaf format, while another Mumbai offering advertises more than 40 preparations.
Delhi has likewise embraced the meal, with sadhyas being offered beyond traditional Kerala establishments.
And in Kolkata, the travelling feast is taking another form. Chef Arun Vijayan is presenting a Kerala-focused Onam pop-up that reaches from Travancore to Malabar rather than turning the festival into a fusion exercise.
The restaurant industry has discovered something valuable: the sadhya is simultaneously food, spectacle and experience.
Few meals photograph as dramatically. A green banana leaf gradually disappears beneath a mosaic of curries, vegetables, pickles, fried accompaniments and sweets. It has a recognisable beginning and ending, an element of ceremony and a story that a restaurant can explain to a first-time diner.
In the experience economy of contemporary dining, that is powerful.
What changes when a feast travels?
Travel inevitably produces adaptation.
A home sadhya does not need to explain itself. A commercial one does.
Restaurants often emphasise the number of dishes because quantity provides an easily understood marker of grandeur: 20 dishes, 25 dishes, 30 dishes, 40 dishes.
But counting preparations can obscure a more interesting truth. There is no single immutable sadhya.
Its composition varies between families, communities and regions of Kerala. Local traditions influence the vegetables, curries, sweets and serving practices that appear on the leaf. The idea that authenticity can be measured simply by reaching a particular dish count therefore misses the nature of the feast itself.
Restaurants face other compromises. Ingredients must be sourced outside Kerala. Large numbers of diners must be served within limited slots. Food that traditionally moves across the leaf in courses may be placed down more quickly. Tables replace floor seating. Cutlery appears beside a meal meant to be eaten by hand.
And the audience changes the experience.
For someone raised with Onam, the first taste of a particular payasam may evoke a grandmother, a childhood home or an argument over who received the crispest pappadam.
For the first-time diner in Delhi or Mumbai, the same dish arrives without that memory.
The restaurant cannot reproduce nostalgia. What it can reproduce is ritual.
The banana leaf, sequence of flavours, abundance of dishes and collective act of eating become the vehicles through which outsiders enter the tradition.
The diaspora plate
This explains why the sadhya has proved unusually resistant to losing its identity as it travels.
Many migrant foods survive by changing radically. They become sweeter, milder, richer or more convenient to suit their new markets.
The sadhya has adapted too, but its physical form places limits on reinvention. Remove the leaf, dramatically reduce the spread, rearrange everything into plated courses and dispense with its rhythms, and at some point it stops feeling like a sadhya.
Its format protects its identity.
For Malayalis outside Kerala, meanwhile, that familiarity can be enormously important. The festival adapts to geography — flowers may change, gatherings become smaller, celebrations move to weekends — but the feast provides a powerful connection with home. Contemporary accounts of Onam in the diaspora repeatedly identify the sadhya as one of the rituals that carries memory most effectively across distance.
Restaurants have effectively built a market around that emotional need and then opened it to everyone else.
A national feast without becoming generic
There is a temptation to describe the sadhya’s spread across India as another example of a regional cuisine becoming “mainstream”.
That description does not quite capture what has happened.
The sadhya has travelled nationally without becoming generic. Its appeal depends precisely on remaining recognisably from Kerala.
Diners do not seek an all-India version of it. They want the banana leaf. They want avial, olan and payasam. They want someone to tell them where the preparations go and how they should begin. Even the unfamiliarity is part of the attraction.
That represents an important evolution in India's food culture.
For decades, cuisines often became nationally successful by shedding regional complexity. The sadhya suggests the opposite can now happen: specificity itself can travel.
On August 26, banana leaves will be unfolded on tables far beyond Kerala — in luxury hotels, modest restaurants, community halls and apartments from Bengaluru to Delhi and Mumbai to Kolkata.
Some will be eaten by Malayalis recreating a festival they have known since childhood. Others will be eaten by people discovering puli inji or olan for the first time.
The leaf is the same. What it means to the person sitting before it may be entirely different.
Perhaps that is why the sadhya has travelled so well. It left Kerala without having to leave Kerala behind.