For decades, street food has functioned as the great equaliser of Asian cities, a bowl of noodles or a handful of samosas priced within reach of nearly anyone. That reliability is now breaking down. Staples once treated as fixed points in daily budgets, samosas in India, kalguksu in South Korea, som tum in Thailand, are climbing in price at a pace vendors and customers alike are struggling to absorb.

The shift traces back to the war in Iran, which began in February and has sent shockwaves through economies with little direct connection to the conflict itself. Much of Asia depends on energy imports routed through the Middle East, and that dependence has become a liability. Currencies across the region have weakened, inflation has accelerated, and the raw ingredients behind the continent's most familiar dishes have grown markedly more expensive.

In Seoul, the effects are visible in the price of kalguksu, a hand-cut wheat noodle soup long regarded as a benchmark of affordable eating. Vendors had resisted crossing this threshold for years, but the average bowl now exceeds 10,000 won, or roughly $6. Flour, clams and vegetables have all risen in cost, and operators who once absorbed small increases quietly say they can no longer do so. Several are now planning further price rises, a decision none describe as easy.

Lucknow tells a similar story through a different fuel. India imports around 60 percent of its liquefied petroleum gas, and much of that supply passes through the Strait of Hormuz, now a chokepoint shaped by the wider conflict. The price of a commercial gas cylinder has doubled to roughly 3,600 rupees, about $38. For samosa vendors working on margins that were thin before the increase, the arithmetic has become punishing. Some report profits reduced to a fraction of what they were a year ago, with little room left to cut costs further.

Bangkok's som tum sellers face a different problem entirely: not the ability to raise prices, but the fear of what happens if they do. Operating costs have risen by roughly 30 percent, yet many vendors have held prices steady rather than risk losing customers who are themselves watching every baht. The caution has come at a cost. Some sellers report daily profits falling by more than half, to around 1,000 baht, about $30, as fewer people stop at their carts. Foot traffic that once sustained a reliable trade has thinned noticeably.

What links Seoul, Lucknow and Bangkok is not a shared dish but a shared exposure. Each city's food economy rests on imported inputs, whether flour, fuel or transport, that trace back to a region now defined by instability. Vendors have little control over any of it. They can only decide how much of the burden to pass on to customers who are, in most cases, just as constrained.

There is no clear end in sight. Analysts following the conflict note that energy markets remain unsettled, and shipping routes through the Gulf show no sign of returning to pre-war reliability soon. For street vendors operating on daily cash flow rather than reserves, that uncertainty is itself a cost, one that shapes decisions about pricing, sourcing and even whether to keep a stall open at all.

A vendor in Bangkok summed up the mood shared by sellers across the three cities. "We are all in the same boat," she said, "hoping it won't sink." Her customers, buying smaller portions or skipping meals out altogether, appear to feel much the same.

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