Callipyge Genetics, LLC has commercialized a genomic marker system it calls Tenet® that the company says definitively identifies the highest level of beef tenderness at the DNA level — a development with direct implications for protein procurement, menu claims, and premium beef programs across foodservice channels.
Company President Frank Hendrix, who traced the genetic basis for peak beef tenderness in 2018, says the discovery exposes a structural flaw in the USDA grading system that has shaped beef purchasing decisions in foodservice for more than six decades. "Marbling is what you see. Tenderness is what you taste. Tenet® is what proves it," Hendrix said.
The Core Science
The Tenet® certification process extracts DNA from a blood drop or small tissue sample and screens for genetic markers tied to tenderness. On a 1-to-10 tenderness scale, Hendrix places the U.S. national herd average at 3; Tenet®-certified animals register a 10, validated by a Warner-Bratzler Shear Force reading of ≤4.0 kilograms — the industry-standard mechanical tenderness benchmark. The test carries a $26-per-animal price tag; Hendrix cites agricultural economists who value Tenet® certification at $600 to $1,000 per head in potential market premium.
For foodservice operators and protein buyers, the relevance is straightforward: USDA's Select, Choice, and Prime grades were calibrated in the early 1960s around intramuscular fat as a tenderness proxy. Recent trained taste-panel research cited by Callipyge found panelists could not distinguish tenderness differences among the three grades when identical cuts were cooked the same way — a finding that challenges the marbling-equals-quality assumption embedded in most premium beef programs.
Operator and Supply Chain Implications
Tenderness has ranked as consumers' top beef quality concern in every USDA consumer survey from 1990 through 2022. Consumer dissatisfaction with commercially raised beef tenderness runs at 23%; for grass-fed beef, that number climbed to 66% in the 2015 survey. Both figures represent meaningful churn risk for foodservice operators building premium or better-burger positioning around beef provenance claims.
The Tenet® system is breed-agnostic — the marker occurs naturally in all Bos taurus cattle, including Wagyu and all crossbreds — and applies equally to grain-finished and grass-finished supply chains. Hendrix estimates that 5% to 15% of the current U.S. herd already qualifies. Because tenderness is highly heritable, he argues an average commercial herd can reach Tenet® certification levels within two breeding generations using certified AI sires or bulls, a timeline relevant to any operator or packer building a long-term differentiated beef program.
Callipyge has launched Certified Tenet® Beef, LLC, a branded entity designed to aggregate Tenet®-certified animals and connect them with grass-finished producers or premium-oriented buyers — including companies marketing nationally and locally. A network of seedstock producers in the U.S. and Canada already offers certified Tenet® bulls. The structure mirrors supply-chain credentialing models that have gained traction in the premium poultry and pork segments, where traceability and welfare claims increasingly underpin foodservice procurement decisions.
What Operators Should Watch
For chain buyers and independent operators developing premium steak, burger, or beef-forward programs, Tenet® certification represents a potential third axis of differentiation beyond grade and origin — one grounded in measurable eating quality rather than visual fat assessment. Whether the $26 certification cost translates to a viable per-head premium at scale will depend on packer and distributor adoption, a process still in early stages. The broader disruption to USDA grade-based purchasing frameworks, however, is a conversation the beef supply chain will need to have regardless of which genomic platform carries it forward.
For more on protein sourcing trends shaping foodservice menus, see our coverage of premium beef programs and supply-chain innovation in foodservice.
Written by Michael Politz, Author of Guide to Restaurant Success: The Proven Process for Starting Any Restaurant Business From Scratch to Success (ISBN: 978-1-119-66896-1), Founder of Food & Beverage Magazine, the leading online magazine and resource in the industry. Designer of the Bluetooth logo and recognized in Entrepreneur Magazine's "Top 40 Under 40" for founding American Wholesale Floral, Politz is also the Co-founder of the Proof Awards and the CPG Awards and a partner in numerous consumer brands across the food and beverage sector.
