Upgrading mushrooms into climate-smart protein
mushroom+ increases the protein density and performance of whole mushrooms, turning existing farms and supply chains into powerful tools for feeding a hotter, more crowded planet.
What we offer
Whole mushrooms, not ultra-processed “fake meat”.More protein per kg, same infrastructure and footprint.Built for flexitarians, retailers and growers who want real impact.
The protein gap is real. So is the climate limit.
The challenge
Global protein demand is rising faster than we can supply it within planetary boundaries. Conventional animal protein drives a huge share of food-system emissions, land use and water stress. Plant-based alternatives help, but they often struggle on taste, nutrition, price and scalability. There’s a clear gap for protein that is delicious, low-carbon and ready to scale today.
From side dish to centre-of-plate protein
Our solution
mushroom+ is a deep-tech platform that boosts the protein content and performance of mushrooms. By enhancing protein yield and nutritional density per kg of biomass, we can turn existing mushroom farms into climate-positive protein hubs, without rebuilding the entire food system from scratch
Core benefits
High-protein mushroomsIncreased protein per kg and complete protein profile that contains all amino acids that we cannot make or obtain from plantsLow-carbon by designDramatically lower CO₂e per kg protein vs. meat and many plant proteins, using proprietary tech.No new supply chainWorks with existing mushroom infrastructure, substrates and distribution.Simple formatsWhole, sliced or minimally processed formats that slot into familiar meals.
more value from every kg you grow
For growers
We help mushroom growers and producers unlock higher-value, protein-rich products using the facilities and skills they already have.
Upgrade, don’t rebuildApply mushroom+ strains to existing farms and substrate streams.Better economicsHigher protein density create new premium categories and contracts.Partner, not vendorWe co-develop technical pilots, support validation, and help you reach retailers and food brands.
climate-smart protein your customers will actually eat
For food brands & retailers
We supply high-protein mushrooms and co-develop products that meet the needs of flexitarian consumers, retailers and food service with credible, audited climate impact.
You getWhole or minimally processed mushrooms with elevated proteinFormats for meals, ready-to-cook, ready-to-eat and componentsWe bringSupply via upgraded grower networksCo-development pilots and white-label optionsImpact and lifecycle data for ESG and Scope 3 reportingIn addition
Stable, predictable quality
Controlled mushroom cultivation delivers consistent nutrition, reducing exposure to quality degradation and supply-side volatility seen in global meat and commodity systems.
Built to be net-positive from day one
Impact
mushroom+ is engineered to deliver measurable climate and resource benefits not just “less bad,” but genuinely net-positive impact as we scale.
Lower emissions per protein unit60–90% lower CO₂e vs. beef and significant reductions vs. many plant-based proteins, based on lifecycle assessments.Less land & waterOver 90% less arable land than animal farming, with efficient water recirculation.Behavioral leverageDesigned for flexitarians: small shifts away from meat at mass scale generate outsized climate gains.We use functional-unit and consequential LCA to quantify avoided emissions and will publish audited impact data as we progress.
Early partnerships. Big ambition.
Where we are now
mushroom+ is an early-stage venture, currently seeking validation of our science, formats and commercial model and partnerships with selected growers and science institutions. Our roadmap combines technical development with real-world partnerships, co-creation and licensing, so we grow impact and revenue together.
TimelineTechnical validation & lab pilotsProving protein density, performance and safety.Co-development with growers & brandsPilot projects, sensory tests and early supply agreements.Scale & licensingRegional roll-out via partner growers, distributors and tech transfer.
about us
About mushroom+
mushroom+ is a UK-based deep-tech venture reimagining mushrooms as a scalable, net-positive protein source. Co-founded by experts in fungal engineering, food systems, sustainability and commercial strategy, and developed within the Carbon13 climate venture ecosystem. Our mission is simple: help the world meet rising protein demand without blowing past planetary boundaries.
Our ValuesEvidence-first: - led by data, LCA and real-world pilots.Partner-led: - we build with growers, brands and regulators, not around them.Net-positive: - climate, communities and economics all have to add up.
where ideas grow wild, deadlines are fungi, and someone's always sporing new strategy
Team m+
Ressa:- Co-Founder, CSO
Filamentous fungi engineer with 10+ years in food and pharma biotech, translating deep fungal science into real-world protein solutions.Corinne:- Co-Founder, CTO
Principal scientist in fungal genetics with 10+ years in biotech. Co-founded mushroom+ from a shared passion for fungi and sustainable food.Andrew:- Co-Founder, CEO
Food systems and sustainability strategist, bridging agriculture, consumer insight, and global markets to scale climate-positive ventures.
Survey
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