Stretching

How can we stretch the resources we already have to accommodate a growing population?

Jump to learnings

Roughly a third of all food produced is never eaten. Most of it is lost during harvesting, storage, or transport. Or wasted in supermarkets, restaurants, and increasingly, our homes.

It is a missed opportunity to feed a growing population. But food loss and waste also generates 8–10% of all global greenhouse gas emissions — nearly five times more than aviation.

Of all available solutions to reduce emissions and feed a growing population, cutting food waste may be the most powerful, and most overlooked.

How do we turn one of food’s biggest failures into its most transformative solution?

Invisible losses

Some losses are visible, like leftovers we scrape from our plates or food that expires. Other losses happen far earlier, and go largely unseen.

Crops are often rejected for looking imperfect or for ripening outside peak demand. Shade-grown fruit like jackfruit is abundant but underused. Bread is another major example, the fourth most wasted food globally, with supermarkets discarding imperfect or near-expiry.

Then there are the nutrient-rich byproducts from food processing: spent grain from brewing, pulp from juicing, many fruit and vegetable skins are edible. Most are discarded for lack of imagination, but often contain the most nutrition.

Chef Russell Nathan's green banana flatbread and jackfruit curry

Green banana flatbread and jackfruit curry

In the Test Kitchen, Chef Russell Nathan, formerly head chef at Michelin-starred Nouri and now founder of Bricolage, showed what happens when we rethink scraps as starting points. His dish paired flatbread made from brewers’ spent grain, a by-product of the brewing industry, with young jackfruit transformed into a pulled pork-style curry. Whilst head Chef Pete Smit of Dirty Supper reworked bread trimmings and animal fats into a savoury spread.

Chef Matt Orlando and THIC

Chef Matt Orlando and THIC - a chocolate alternative

Whilst Chef Matt Orlando (former Noma, founder of Endless Food Co. and AIR) presented THIC (This Isn’t Chocolate) — a rich, chocolate-like product made from brewers’ spent grain. It contains no cocoa, no palm oil, and no deforestation. Just bold flavour and a bold rethink of what ingredients can be.

Jake Berber from Prefer

Jake Berber from Prefer

Prefer follows the same logic. Based in Singapore, the startup brews coffee-like beverages by upcycling broken rice and chickpeas. These ingredients are fermented, roasted, and ground to create a bold, bean-free alternative. Proving innovation and potential often begins in areas we’ve been ignoring.

Turning waste into wonder

Most food waste today doesn’t happen on farms or in factories, it happens at home. Fruits, vegetables, roots, and tubers are among the most discarded items globally. These losses waste food and also the water, land, and energy used to grow it.

Fermentation is one of the oldest tools we have to preserve nutrients, extend shelf life, and reduce waste. It transforms food scraps into flavourful, probiotic-rich ingredients, like pickles, kimchi, and sauerkraut.

At Bricolage, founders Russell and Sarah turn surplus produce and often-wasted by-products into the backbone of their menu. They rely on preservation techniques — drying, pickling, curing, smoking, and fermentation — to extend shelf life, deepen flavour, and sometimes make the inedible edible. Spent coffee grounds are a signature ingredient, reimagined as kombucha, shoyu, moromi paste, or even a roasting medium for root vegetables.

Chef Russell Nathan's preservation station and 'Trimchi'

Chef Russell Nathan's preservation station and 'Trimchi'

Professor William Chen at NTU takes this further. His research extracts chitin, a valuable material, from prawn shells, with various applications, including its use as a plant growth enhancer and in pharmaceutical drug delivery systems. Demonstrating how circular design can create new value from organic refuse.

Prof. Will Chen speaking at Synthesis' Symposium

Prof. William Chen speaking at Synthesis' Symposium

Broccoli Stem Fries

Everyone loves fries!
Give broccoli stems a second chance with a fun crunchy texture in fries format.

View recipe
Chopped broccoli stems

Broccoli

80%+ wasted on average

Banana Caramel Sauce

Puree chunks of overripe banana into cooked caramel, creating a thick, rich sauce that amplifies the rich flavor of banana bread.

View recipe
Bananas

Bananas

40% wasted on average

Umami Prawn Powder

Roast peeled shells from shrimps. Ground and mix with sea salt for a nutty, briny flavor.

View recipe
Prawn shells

Seafood Shells

50%+ wasted on average

“Fermentation helps reduce food waste by extending the shelf life of perishable foods, transforming food scraps into valuable products, and promoting a circular food economy.”

Prof. William Chen
Professor William Chen, Nanyang Technological University

Meat waste in a growing world

Global meat consumption has increased fivefold since 1961, and demand is projected to rise another 14% by 2030, particularly across Asia and the Americas.

Yet nearly 1 in 5 kilograms of meat produced is lost or wasted. Given the land, water, feed, and emissions involved in raising animals, every gram wasted carries a heavy cost: to the environment, to supply chains, and to household budgets.

For restaurants and businesses, this loss eats into margins. For consumers, it reflects how far we’ve drifted from the source of our food — and how little of the animal we use.

At Dirty Supper, founder and chef Pete Smit challenges diners to rethink what’s edible. On the menu he serves pig head nuggets, terrine made from ears and snout, and offal-forward dishes that proved flavour doesn’t depend on familiarity.

LightBlue Consulting, a UN-awarded firm, is tackling meat loss and waste from the other end — by helping hospitality businesses measure, monitor, and reduce waste. “Most hotels and cafeterias don’t even know they have a food waste problem,” said founder Benjamin Lephilibert. “That blind spot leads to far higher hidden costs than they imagine.”

So what have we learnt?

1
Food loss starts before the plate

From "ugly" produce to unharvested shade crops like jackfruit, food is often lost long before it reaches consumers. Tackling waste at the source—harvesting, processing, and distribution—would increase food output by up to 1.5x.

1
1

Food loss starts before the plate

1
2
Byproducts are ingredients, not waste

Spent grain, coffee grounds, juice pulp, and liquid whey have untapped potential. Repurposing them cuts waste, lowers costs, and creates nutritious products, often superfoods.

2
2

Byproducts are ingredients, not waste

2
3
Rebrand byproducts as benefits

It’s not waste—it’s flavour and nutrition. Shifting perceptions, as whey protein did, can drive demand for more commercially viable sustainable choices.

3
3

Rebrand byproducts as benefits

3
4
Time-tested preservation works

Fermentation, curing, and smoking extend shelf life and ease supply chain pressures. Looking back can help us move forward.

4
4

Time-tested preservation works

4
5
Smarter collaboration drives impact

Startups bring agility; big companies bring scale. Stronger systems for working together can turn sustainability solutions into industry standards.

5
5

Smarter collaboration drives impact

5
SOURCING

Jump to a section...

MENU 2035SCENARIOSSOURCeSTRETCHSUSTENANCE
methodpartnersAbout