NATfresh
Cooling that Preserves Freshness, Weight and Shelf Life

Freshness fades gradually, almost imperceptibly at first, yet the cost begins the moment food leaves its point of origin to be cooled and prepared for transportation. A lettuce head cut in the field, grapes waiting before pressing, fish landed at the harbour, meat moving through a processing line and meals prepared in commercial kitchens all remain biologically active after production. They continue to release heat, shed moisture and deteriorate. As internal cell water pressure weakens, texture softens, flavour loses definition, weight declines and shelf life shortens.

The NATfresh Cooling technology was designed to slow that decline, but much of the industry still relies on a blunt, surface based method. Conventional systems force cold air onto the exterior and wait for the centre to cool in its own time. Many also use vacuum cooling. The product loses moisture as it cools, while the core stays warmer for longer. It may complete the cold chain, yet it arrives with reduced structural integrity, diminished flavour and lower commercial value than it had at harvest.

NATfresh, based in Vissoie, Switzerland, begins from a different premise—cooling does not need to work against the product from the outside.

Its patented saturating vapour pressure process, together with quantum physics and thermodynamics, acts directly on the water molecules in the air surrounding the food and the ones within the food itself, cooling the entire mass uniformly in 15 minutes. The cold develops from within, preserving cell walls and maintaining the turgidity that protects texture, flavour, weight and structural strength.

This internal approach makes NATfresh a different class of cooling technology, one that preserves the product's authenticity rather than merely delaying decay. The process slows biological activity towards a near hibernation state, locking in freshness at the cellular level. It gives producers a measurable advantage: longer shelf life, reduced waste, lower energy use and more consistent quality across produce, vegetables, fruits, meat, fish and prepared foods. Moreover, it preserves the organoleptic characteristics and nutritional value. Where conventional cold has long been used to postpone deterioration, NATfresh uses it to safeguard the qualities that make food valuable.

The technology was developed by Philippe Vitel, a French mechanical and production engineer who spent 15 years in the food sector and twenty five years in the aerospace industry on strategic programmes, before founding NATfresh. He approached cooling as an aerospace engineer would any inherited system, questioning whether the established method was truly optimal. His answer earned French and European awards and an invitation to join the Slow Food Foundation, chaired by the Prince of Monaco.

“We have turned precooling and cooling inside out, removing the old trade off between speed and quality. It is a fundamentally different technology from anything currently on the market,” says Vitel.

Working on the Water

NATfresh’s method is often mistaken for vacuum cooling because both operate under reduced pressure, yet they rely on fundamentally different principles. Vacuum cooling removes heat by lowering the pressure around a product. NATfresh uses pressure as a key element within a wider thermodynamic process that acts directly on the product’s water molecules, guided by proprietary frequency based control of quantum physics and thermodynamics.

“We do not work directly on the product. We work on its water molecules,” says Stefan A. Müller, managing partner and executive chairman. “Instead of targeting the apple itself, we target the water molecules within the fruit.”

A standard cold room can run for hours or even days, powered by large compressors that keep pushing cold air until the centre finally cools. NATfresh completes the job in a single 15 minute cycle, whether treating one metric ton or filling a 12 tonne tunnel. The system draws roughly 7.5 kilowatt hours per metric ton regardless of temperature differences and can reduce cooling energy use by up to 80 percent.

The process behaves counterintuitively. A hotter product, which conventional systems labour over, suits NATfresh better because it holds more thermal energy for the system to work with. The cycle runs in two phases, one that absorbs energy and one that releases it and much of the energy it needs comes from heat already stored in the food.

“A tray leaving a kitchen at 90 degrees Celsius reaches a safe chilled temperature within the same 15 minutes, giving caterers and ready-meal producers room to cook ahead, hold quality steady and lower their energy costs,” says Vitel.

Protecting the Margin

Every percentage point of moisture held is a value that reaches the market. NATfresh applies its technology in two settings: pre cooling produce straight from the field and cooling cooked, precooked and processed foods.

The process needs no natural or chemical additives. It works solely with air and humidity inside the tunnel, so it keeps the product’s hygrometry, its moisture balance, essentially untouched. Goods cooled this way avoid the three percent weight loss that conventional systems accept as routine and waste in salads and other vegetables due to ‘cold burn’ can fall by as much as 30 percent. An apple held in this state can keep up to four times longer than under standard cooling. Carrots can last for months, remaining firm and sweet. Each of these gains flows directly to the producer’s margin.

The same cycle clears another source of loss. Pests common in warmer climates that hide in fruit and ruin it in transit do not survive the cycle, so a crate arrives free of the insects that would otherwise spoil part of the load. A cigar maker plagued by tobacco worms found the method killed the pest while preserving the leaf’s humidity as well as the final product, the kind of case NATfresh keeps encountering as word spreads.

“While energy usage is easy to calculate, measuring the impact of waste is far more complex,” says Vitel. “We must eliminate food waste worldwide. By preserving quality at the molecular level, our process locks in vitamins, nutritional value, flavour and crunch.”

The argument has already won industrial users. One large French vegetable grower runs a 10-tonne machine through two or three cycles an hour across long daily shifts and a second grower nearby runs a 12-tonne line. A major European retailer now requests that everything it buys must go through the process, summer and winter alike, even when rapid cooling is not the main objective, for the quality and lower waste it sees on the shelf.

One Method, Many Harvests

More than 1,000 products have passed through NATfresh trials and measurements, spanning vegetables, fruit, meat, fish, cheese, nuts, flowers and cooked meals. The same principle applies across all of them.

• Outlasting every expectation. Treated roses held for 30 days without water and, by NATfresh’s account, their scent intensified as fragrance moved gradually from the core outward.

• Keeping harvest quality intact. Harvest heat bears down on growers and their labour, tightening the pressing schedule. A mobile NATfresh unit can settle freshly picked grapes into a stable, low stress state before pressing, then chill the juice must rapidly as it runs. Growers in Champagne and across French viticulture have followed the trials closely, drawn by steadier winemaking, lower heat exposure and the significant reduction of the use of sulphites.

• Replacing ice with precision cooling. A boat heading out for a tonne of catch often carries close to a tonne of ice, costly, bulky and only as clean as the water it is made from. NATfresh can produce ice at around 40 percent below the usual cost while maintaining the same quality. A unit built into a larger vessel can remove the need for ice altogether.

A European study conducted by the French National Centre for Scientific Research (CNRS) tested the method on both delicate and robust species. Cuttlefish, which loses colour quickly and produces large amounts of waste, retained its colour, taste and appearance much longer after treatment, allowing sellers to ask a higher price per kilo. Even when the test fish travelled 50 kilometres by road through summer heat before reaching the machine, shelf life at least doubled.

The Wider Reach

Since so much of food is water, NATfresh tests its machines on barrels of water when crops are out of season and that habit has opened a door beyond the plate. Data centres, which spend a large share of their power on cooling, can chill their water in the same short cycle and the process can yield the demineralised water that sensitive electronics demand. Chemical plants, power stations, greenhouses, swimming pools and seafood ponds all sit within reach of the same idea.

“In hot regions that import most of what they eat, where Dubai alone brings in roughly 80 percent of its food, one system could cool a greenhouse and treat its harvest, a step towards food independence as much as preservation,” says Vitel.

NATfresh is now building for scale. A second entity, NATfresh Distribution, will lead worldwide sales, with Gustavo De Hostos at the helm. The hardware is proven at industrial scale in 4, 10 and 12-pallet tunnels, served by machine rooms housing vacuum systems, cold generators and electronics, with more installations on the way. NATfresh now holds the title of Top Food Cooling Technology in Europe 2026, awarded by Food and Beverage Tech Review Europe.

What NATfresh ultimately changes is the purpose of cooling. Every gain in this story, the preserved weight, the longer shelf life, the lower energy, the cut in waste, traces back to one shift, cooling that works from the inside out. NATfresh does more than make things cold. It preserves what makes food worth selling, its weight, taste, colour, scent and time. For producers fighting waste, retailers chasing a longer shelf life and food systems hunting lower-energy ways to keep what they grow, it offers a colder route that, for once, gives back more than it takes.