Every Butternut Box recipe has been designed by a qualified team, tested against independent standards, and made in a kitchen run to food-grade rules, not animal-feed ones. Here's exactly who's involved, what they're qualified in, and what has to happen before anything reaches your dog's bowl.
Who designs Butternut Box recipes
Making food to human standards is one part of the job. Knowing what a dog actually needs is the other, and a dog's nutritional requirements aren't a scaled-down version of ours.
The team who design our recipes come from pet food. Their backgrounds are in food science, chemistry, animal science and veterinary medicine, across both own-label pet food and major pet food brands. Together, we have over 50 years of experience in this field: which nutrients dogs need and in what quantities, how ingredients behave once cooked, and where the safe limits are.
Dr Ciara Clarke, our in-house vet, signs off every ingredient and every final recipe.
Charlotte McCormack, our Product Development Director, signs off every ingredient and every final recipe alongside Dr Clarke.
Our lead nutritionist is an independent veterinary professor, who’s been an European-registered specialist in animal nutrition for 33 years.
We also work with a network of independent consultants, universities and vets outside the business, so people with no affiliation to us can check our recipes too.
The standard every recipe is built to
Every Butternut recipe is complete and balanced, meaning it gives your dog everything they need in the right amounts, with nothing missing. The standards we work to are set by FEDIAF, the European Pet Food Industry Federation, and used across the UK and Europe.
Before we cook anything, we calculate the recipe's theoretical nutrition using software that checks every nutrient against FEDIAF's minimum and maximum levels. That software draws on our own lab results for what's actually in each ingredient, plus published nutritional reference books used across the food industry.
How we make sure our ingredients are safe
Every ingredient is assessed thoroughly before we use it. We look at the highest amount that could realistically end up in a meal, and check it's safe at that level.
We confirm the ingredient is on the official approved lists for animal feed in Great Britain and Europe, or is otherwise recognised as safe to eat. We then review published scientific research to ensure the amount we use stays well below the levels shown to be safe, including limits set by the European Food Safety Authority.
Each assessment is signed off by our in-house vet, Dr Ciara Clarke, and our Product Development Director, Charlotte McCormack, before an ingredient goes anywhere near our kitchen.
Anything that doesn't pass isn't used.
How every Butternut Box recipe is tested before it goes anywhere near your dog
We make trial batches in our development kitchen, then cook small test runs on our production line.
Samples of the ingredients and the finished meal go to an independent laboratory, not our own, accredited by UKAS, the UK's official body for checking labs test accurately.
That lab measures everything FEDIAF requires: protein, fat, fibre, moisture and ash; individual minerals; fats such as omega-3s; and the full range of vitamins.
Once the results check out, members of the Butternut team feed the meals to their own dogs first, then we send them to a small group of Tastemakers for feedback.
We then cook a full-size batch and send several separate samples to the lab, to check the results are consistent and not a one-off.
The final results are reviewed and signed off by Dr Ciara Clarke, our lead nutritionist, and Charlotte McCormack.
We've chosen not to run traditional six-month kennel feeding trials. Instead, we rely on careful recipe design, independent laboratory testing, and feedback from dogs living in ordinary homes.
Who runs the Butternut Box kitchen, and to what standard
Most pet food is made in plants built to animal feed standards. Ours isn't. Our kitchen runs to the standards used for food people eat, which are tighter in every direction that matters: hygiene, temperature control, keeping raw and cooked food apart, and the paper trail behind every batch.
Our kitchen team has extensive experience making human food. Our technical team's background is in high-care food manufacturing: controlled environments with strict rules on hygiene, separation and access, across meat, chilled foods and dried goods.
How we control every ingredient, from supplier to bowl
We buy from the human food supply chain, the same one that feeds people. Most pet food uses Category 3 material (animal parts legally fit only for animal feed). We don't.
Every ingredient supplier must hold a food safety certification recognised by the Global Food Safety Initiative, such as BRCGS, FSSC 22000 or GLOBAL G.A.P.
Every meat supplier must meet our animal welfare standards for how animals are kept, transported and handled.
All our fish is certified by the Marine Stewardship Council, the Aquaculture Stewardship Council, or an equivalent scheme.
New suppliers complete a detailed questionnaire on food safety, quality and sustainability, reviewed by our technical team. Every ingredient is sampled, tasted and lab-tested for fat, moisture and protein before a first trial order is placed.
Approved suppliers are re-checked on a risk-based schedule: every year for higher-risk suppliers, every three years for the lowest.
Every delivery is checked on arrival for temperature, packaging, labelling and contamination before it enters the kitchen. Every ingredient is traceable to its supplier, batch and delivery date.
Anything that doesn't pass isn't used.
How we keep watching after a recipe launches
Our Quality team reviews wellness reports daily and keeps reference samples from every batch. If something comes up, they trace it back through production records: ingredients, suppliers, cook and cooling temperatures, and lab results for that batch. They bring in our buying team, hygiene specialists and outside experts where needed.
Our in-house Vet Nurse team logs every supported conversation in a centralised system, categorised by topic, so any team member has full context. Trends are evaluated every four weeks, and anything unusual is escalated to our Customer Love Resolutions Manager and Senior Leadership Team.
We feed over 400,000 dogs every single day. This is the process behind every one of their bowls.