By Ramiz Uddin, PhD; Head of Experimentation, UNDP Accelerator Lab Bangladesh.

Mejanur Rahman, Applied Statistics and Data Science, University of Dhaka.

Osama Bin Tahir, Applied Statistics and Data Science, University of Dhaka

1. Background: The Socio-Economic Fabric of Street Food

1.1 The Global and National Context of the Informal Food Sector

The street food sector is a visible, vital part of the Global South's informal economy, providing daily nutrition and absorbing surplus labor, particularly migrants lacking formal skills. In Bangladesh, this immense, unquantified economy involves hundreds of thousands of vendors, characterized by low capital and high labor intensity. Despite significant economic contributions, vendors lack formal recognition, leading to precarious operations, frequent harassment, and exclusion from social protection and essential municipal services, creating hygiene and safety barriers.

Cox’s Bazar presents a unique micro-economy shaped by two dominant forces: a booming tourism industry (the world’s longest natural sea beach) and a massive Rohingya refugee humanitarian operation. Tourism drives high demand for food, leading to a street food culture focused on marine products (e.g., fried crab, grilled octopus), linking vendors to the "Blue Economy." The 2017 refugee influx strained local infrastructure and labor, intensifying competition and making street food vending a survival strategy for vulnerable host community members. Development agencies like UNDP and local partners recognize this sector as a strategic point for building economic resilience and social cohesion by professionalizing these micro-enterprises to capitalize on tourism while navigating the post-crisis complexity.

2. The Supply Chain: From the Bay of Bengal to the Beach Stall

The production of street food in Cox's Bazar relies on a complex, vulnerable supply chain starting with artisanal fishermen in the Bay of Bengal, sourcing non-conventional marine species. The market has created a niche for previously low-value species, driven by tourism.

Sourcing Marine Resources:

• Cephalopods (Octopus and Squid): Once non-mainstream, these are now premium street foods, primarily harvested by artisanal fishermen near Moheshkhali and Sonadia Island using specific nets and hooks. Supply is highly seasonal, peaking in the winter tourist season.

• Crustaceans (Mud Crab and Lobster): Sourced from Chakaria and Teknaf mangroves, vendors compete with high-volume export depots for supply, often receiving "reject" grade or paying premium prices during peak demand.

• Marine Fin-fish: Tuna, Coral (Sea Bass), and Pomfret are staples, typically landed at the BFDC ghat.

Logistical Challenges:

The key weakness is the lack of cold storage. Vendors, operating without access to electricity, rely solely on ice boxes. This forces a volatile "daily buy-sell" cycle, preventing inventory stocking when prices are low and leading to food waste during low-footfall periods like the rainy season.

Market Volatility:

The supply chain is heavily seasonal. The monsoon (June–August) reduces catch, driving up input costs while tourism simultaneously drops, creating a "double burden" of high cost and low revenue. Ramadan also disrupts operations.

3. Health Dimensions: Nutritional Value and Public Safety Risks

The proliferation of seafood-based street food in Cox’s Bazar offers a dual narrative: it presents a significant opportunity for nutritional improvement among consumers but poses substantial public health risks due to hygiene failures in the production process.

3.1 Nutritional Profile of Marine Street Food

Unlike the empty calories of processed snacks, the marine-based street food of Cox’s Bazar is nutrient-dense. The shift towards consuming cephalopods and marine fish provides access to high-quality proteins and micronutrients that are often deficient in the Bangladeshi diet.

These foods, if prepared correctly, offer a "superfood" profile. The Omega-3 fatty acids found in squid and tuna are critical for brain development in children and heart health in adults. The high B12 content in octopus addresses a common deficiency in developing nations. Thus, the street food sector serves a hidden public health function by democratizing access to these nutrient-rich foods, which might otherwise be restricted to expensive formal restaurants.

3.2 The Hygiene Gap and Food Safety Risks

However, the nutritional benefits are often compromised by the conditions of production. The baseline study and FGDs conducted by UNDP Accelerator Lab and Uttaran revealed alarming hygiene deficits prior to intervention.