Cultivated Meat Just Hit 19x Protein Productivity: Inside the Edible Packed-Bed Leap

For more than a decade, the cultivated meat industry has chased a single number: how many cells it can pack into a liter of tank. More cells, the thinking went, would mean cheaper meat. This week, two companies published results arguing that the industry was measuring the wrong thing.

Ever After Foods of Haifa, Israel, and Roslin Technologies of Edinburgh, Scotland, announced on October 13 that their joint cultivated meat production program had combined Roslin's advanced cell platform with Ever After Foods' proprietary Edible Packed Bed (EPB) technology to grow structured cultivated tissue with sharply higher yields. The system reached cell density above 150 million cells per milliliter and volumetric productivity of 326 grams per liter of wet biomass, 57 grams per liter of dry biomass, and 40 grams per liter of cultivated protein.

Against the same cells grown in a standard stirred-tank suspension benchmark, the companies reported 19 times higher dry biomass productivity, 19 times higher cultivated protein productivity, and 11 times higher wet biomass productivity. The improvement came from two effects multiplying together: five times higher cell density, and four times more protein and dry biomass produced by each individual cell.

A new way to measure progress

Cultivated meat is genuine animal tissue grown from animal cells in a controlled environment, without raising or slaughtering livestock. For years the engineering conversation revolved around cell density, partly because it is easy to measure and notoriously hard to raise. But a tank crowded with cells is not a product. Commercial production depends on how efficiently those cells convert nutrients into edible protein, usable biomass, and structured tissue that resembles actual meat.

That distinction is the core of the announcement. Density has been the industry's primary focus for more than a decade, yet it is only one part of the manufacturing challenge. Ever After Foods chief executive Eyal Rosenthal has argued the point directly: what matters commercially is how efficiently cells produce edible protein and tissue, not cell count alone.

"The industry has become very good at growing cells, but cells are not the final product." - Eyal Rosenthal, CEO of Ever After Foods

The numbers, and what they exclude

The reported figures deserve a close read because the companies were unusually transparent about how they were calculated. The headline productivities were measured on structured tissue grown directly on PlantriX, Ever After Foods' edible scaffold, and all values were calculated after excluding the scaffold and media contribution. The scaffold itself represents less than 2 percent of the final product by weight, so the numbers reflect cultivated cell-derived material rather than plant filler.

Independent reporting on the announcement added that the 150 million cells per milliliter density was reached in nine days, a 62-fold expansion, using serum-free, animal-component-free media. Independent peer review of the full test data has not been published, and the companies direct technical inquiries to their own contact address, so the figures remain company-reported for now.

How the edible packed bed works

The conventional approach grows cells suspended in a stirred tank, like a soup kept in motion. Stirring keeps nutrients circulating, but it also subjects cells to shear stress, and efficiency tends to deteriorate as vessels get larger. Ever After Foods' system takes a different route. Cells are first expanded in suspension as multicellular aggregates, then mechanically dissociated and seeded directly into a tissue-production bioreactor, where they attach to the edible PlantriX scaffold and mature into structured tissue.

The packed-bed geometry matters. Instead of cells floating freely, media flows through a dense column of tissue, which supports a much higher solid-to-liquid ratio: more meat in the same space. The companies combined several techniques that each address a known cost driver, including suspension propagation of cell aggregates, serum-free media, mechanical dissociation before seeding, direct seeding into the tissue reactor, plant-based edible scaffolds, and animal-free attachment materials and coatings.

Two companies, one bottleneck

The partnership pairs complementary pieces. Ever After Foods was formed as a joint venture between cellular agriculture company Pluri and the Tnuva Group, Israel's largest food company, and describes itself as an industrial technology company building protein manufacturing infrastructure. Roslin Technologies is a spinout from the University of Edinburgh developing cell lines and production know-how for the cultivated meat sector; its porcine pluripotent stem cells have indefinite replication potential, differentiate naturally into tissue, and are reported to grow fast in low-cost, food-safe media.

The structure of the deal says something about where the industry thinks the bottleneck is. Ever After Foods is not trying to become a meat brand. Its commercial strategy centers on supplying the EPB platform and working with cultivated meat companies to enable industrial-scale production. The bet is that manufacturing infrastructure, not another consumer brand, is what the sector is missing.

The economics question

All of this only matters if the economics move. Rosenthal told reporters that higher output from the same cultivation volume means potentially less equipment, infrastructure, and operating cost per kilogram, and that producing structured biomass directly on an edible scaffold cuts out separate cell-harvesting and downstream processing steps. The companies say their techno-economic modeling indicates the potential for substantial reductions in both capital and production costs compared with conventional stirred-tank approaches.

Those projections have not been validated at commercial scale. Industrial-scale validation is the company's next major milestone: together with equipment maker Bühler, it has developed a 200-liter modular production system, and the timing of initial commercial production will depend on that validation and on its partners' development plans. The company is also exploring cultivated seafood and pet food, the latter following its acquisition of Fishway, which expanded its capabilities in aquatic cell biology.

Regulators are starting to move

Technology is only half the equation; regulators have to clear the products. Abu Dhabi's government this week unveiled a framework letting companies run public tastings of cultivated meat and precision-fermented foods before securing full approval, developed by the Abu Dhabi Quality and Conformity Council with the city's food safety authority and investment office, and presented during Global Food Week UAE. Singapore and the United States have both already granted regulatory clearance to cultivated chicken products, and Ever After Foods says it is advancing preparations for priority markets including Singapore, Israel, and the United States, though it has not yet filed for approval itself.

What to watch next

The announcement is a data point, not a finish line. Watch for three things: independent validation of the productivity figures, ideally in a peer-reviewed setting; progress on the 200-liter modular system and whatever industrial-scale validation follows; and the first regulatory filings from partners using the platform. If the per-cell productivity gains hold up outside the lab, the industry's decade-long fixation on cell density may finally give way to a better question: not how many cells you can grow, but how much meat each one can make.