How can we stretch the resources we already have to accommodate a growing population?
Jump to learningsRoughly 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?
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.
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 - 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
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.
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'
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. William Chen speaking at Synthesis' Symposium
Everyone loves fries!
Give broccoli stems a second chance with a fun crunchy texture in fries format.
Puree chunks of overripe banana into cooked caramel, creating a thick, rich sauce that amplifies the rich flavor of banana bread.
View recipeRoast peeled shells from shrimps. Ground and mix with sea salt for a nutty, briny flavor.
View recipe“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.”
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.
Spent grain, coffee grounds, juice pulp, and liquid whey have untapped potential. Repurposing them cuts waste, lowers costs, and creates nutritious products, often superfoods.
It’s not waste—it’s flavour and nutrition. Shifting perceptions, as whey protein did, can drive demand for more commercially viable sustainable choices.
Fermentation, curing, and smoking extend shelf life and ease supply chain pressures. Looking back can help us move forward.
Startups bring agility; big companies bring scale. Stronger systems for working together can turn sustainability solutions into industry standards.