What Is the Circular Economy of Food — and Why Does It Matter for Hong Kong?
You've probably heard the phrase "circular economy" tossed into sustainability conversations. It sounds like jargon. It often is. But the underlying idea is simple, important, and increasingly relevant to the way Hong Kong feeds itself.
This post unpacks what a circular economy of food actually means, why the linear system we currently run is so costly, and what a more circular alternative looks like in practice - including the small but meaningful role that food rescue apps, upcycled products, and events like Rescued Feast play in closing the loop.
The linear model: make, eat, waste
Most food in Hong Kong — and globally — runs on a linear model. Resources go in at one end: land, water, energy, labour, packaging, refrigeration, logistics. Food comes out the other end. A significant portion of it never gets eaten.
The numbers for Hong Kong are stark. The city generates around 3,300 tonnes of food waste every day, according to the Environmental Protection Department — accounting for roughly 30% of total municipal solid waste. Most of that ends up in landfill, where it decomposes anaerobically and produces methane, a greenhouse gas approximately 80 times more potent than CO₂ over a 20-year period.
This isn't just a bin problem. Food that goes to landfill represents everything that went into producing it: the water used to grow the crops, the fuel used to ship the produce, the refrigeration used to keep it cold along the way. When food is wasted, all of that embedded resource is wasted too. The linear model, at scale, is expensive to run and punishing on the environment.
What the circular economy of food looks like
A circular food economy is designed around the opposite logic: keep food — and the resources embedded in it — in use for as long as possible, at the highest possible value, before anything goes to landfill or incineration.
In practice, this plays out at several levels simultaneously.
Prevention first. The most valuable point in the circle is before surplus even exists. Better forecasting, smaller batch ordering, dynamic pricing on near-expiry stock, and shelf-life extensions all work to reduce the volume of food that becomes surplus in the first place. Restaurants that have piloted AI-assisted inventory tools in Hong Kong have reported waste reductions of 20–30% — significant at a scale where food costs typically represent 28–35% of revenue.
Rescue and redistribute. When surplus does occur, the priority is getting it to someone who will eat it — at full nutritional value, in its current form. This is where food rescue operates: a restaurant has forty portions of prepared soup at close of service; a rescue platform connects it to a community fridge or a meal programme within the hour. The food is used, the restaurant avoids a skip charge, the recipient gets a hot meal.
Upcycle. When food is past the point of redistribution in its current form — cosmetically imperfect produce, spent coffee grounds, surplus bread — upcycling transforms it into something with new value rather than sending it to waste. HK-based startups have built products from spent grain flour, cold-pressed juice pulp, and dehydrated fruit that would otherwise be discarded. Internationally, upcycled ingredients are now appearing in mainstream retail — what was a niche concept five years ago is becoming a recognised product category.
Compost and recover. At the end of the line, organic matter that genuinely can't be consumed or upcycled can at minimum be composted or converted to biogas, returning nutrients to soil rather than releasing methane in landfill. Hong Kong currently has two organic waste treatment facilities that do this at scale; the government has committed to expanding food waste recycling collection to at least one bin per public housing block by 2026.
Where Hong Kong is in the transition
Hong Kong has the infrastructure of a circular food economy starting to emerge, but not yet operating as a coherent system.
On the policy side, the government has tightened regulations on single-use plastics and is expanding food waste collection infrastructure. The EPD's Food Wise Hong Kong campaign has been running for years, with measurable (if modest) reductions in per-capita food waste.
On the business side, a growing number of restaurants, hotels, and suppliers are actively working on waste reduction — partly out of genuine commitment, partly because food cost pressure and ESG reporting requirements are making it financially rational to do so. The HKTDC has noted that 78% of Hongkongers say they're likely to stop using brands with excessive packaging — consumer pressure is real.
What's missing is the connective tissue: the platforms, networks, and marketplaces that make it easy for surplus to find its next use rather than defaulting to the bin. This is exactly the gap that food rescue apps and platforms like CHOMP are designed to fill.
What CHOMP does in this system
CHOMP sits at the rescue-and-redistribute layer of the circular food economy. The app connects people in Hong Kong with surplus food from local restaurants, bakeries, and cafes — typically in mystery boxes or near-expiry listings at a fraction of the normal price.
This is circular economy logic applied to individual purchasing decisions. Instead of a restaurant discarding its end-of-day surplus and a customer buying fresh-made the next morning, the food gets eaten, the business recovers some cost, and less ends up in the bin.
At the individual level, the impact of a single rescue purchase is small. At the level of a city — where thousands of surplus portions are available each week and thousands of people are looking for affordable food — the aggregate effect is meaningful. CHOMP's rescue data tracks kilograms of food diverted from waste with each transaction, so the loop is closed on the information side too: you can see exactly what your bag represented in terms of food and CO₂ saved.
The bigger shift: from waste reduction to system design
The most important reframe the circular economy offers is moving from "reducing waste" — a damage-limitation mindset — to "system design" — an opportunity mindset.
In a well-designed circular food system, surplus is a resource with a market. Ugly produce has buyers. Spent grain has industrial uses. Near-expiry stock has a dynamic price that clears inventory. End-of-life food has a composting destination rather than a landfill one.
None of this requires individual behaviour change of heroic scale. It requires the infrastructure and incentives to be in place so that the circular path is the path of least resistance — cheaper, easier, and more visible than the linear alternative.
Hong Kong is at an early but accelerating stage of building that infrastructure. The pieces exist. The question is how quickly they connect into a coherent system.
How to participate right now
You don't need to wait for policy or infrastructure to catch up to engage with the circular food economy in Hong Kong.
Buy rescued food. Apps like CHOMP list surplus from local restaurants and bakeries at reduced prices. Each purchase directly diverts food from waste and signals demand for the rescue model.
Buy upcycled products. A growing number of HK brands are selling products made from rescued or transformed surplus — from cold-press juice pulp crackers to spent grain baked goods. Buying them creates revenue for the circular model.
Choose restaurants with visible waste reduction practices. Dynamic pricing on near-expiry items, clearly sourced rescued ingredients, composting partnerships — these are signals worth rewarding with your spend.
Pass food on. Community fridges in Hong Kong — concentrated in areas including Sham Shui Po, Kwun Tong, and Tuen Mun — accept surplus home food. The barrier to participation is low.
The circular economy of food isn't a distant policy objective. It's a set of purchasing decisions and platform choices that are available today, in Hong Kong, right now.
Join the circular food economy — one mystery box at a time
CHOMP connects you with surplus food from local restaurants and bakeries in Hong Kong. Save money, save food, close the loop.
Download the CHOMP app