Meet the Family at Our Cornish Business - Cornish Dairy Co

Trewithen Dairy is now Cornish Dairy Co!

About us

Ehrmann Cornish Dairy is the home of two well-loved names in dairy: the Bavarian-founded, family-owned Ehrmann, and the family-founded Cornish Dairy Co. Cornish Dairy Co was founded by the Clarkes in 1976, with the original dairy still very much our home today. By combining German scale and expertise with Cornish quality and care, we’re creating something unique in the UK dairy sector.

Our history

In 1976 the Clarke family began dairy farming, and fast forward to 1994, Bill and Rachel Clarke began making their first batches of clotted cream by hand. Working late into the evening, they bottled milk after the children were in bed and delivered it fresh the next morning. Using open trays and traditional methods, they cooked the clotted cream themselves and quickly won over customers.

By 2001, the milk bottling and cream-making side of the business had become so successful that a big decision had to be made. To continue dairy farming or switch entirely to processing milk. It wasn’t an easy decision, but the family sold their herd and moved full-time into producing milk, cream and, more recently, butter and yoghurt.

The founders sold the business in June 2024 to the Ehrmann group, an independent 3rd Generation family-owned business, which is one of Germany’s leading dairy companies with over 100 years of heritage and a history of innovation in the production of high-quality dairy products.

The Clarke Family (1)

Today, 2026

With a 200-strong Cornish-based workforce, we are now known as Ehrmann Cornish Dairy, proud to be part of the Ehrmann family, producing high-quality dairy products. Our brand, Cornish Dairy Co, represents the best of the county, both in people and the products we make. It’s a family, and we share those values in supporting one another to achieve success.  
 
With a strong heritage of innovation and a deep commitment to quality, we work closely with over 40 local Cornish farmers to source the freshest milk for our clotted cream, yoghurts, butter, and high-protein desserts. We produce great-tasting, high-quality products loved by many in Cornwall, and are starting to make waves across the UK through increased distribution in major supermarkets.  
 
Our ongoing investment in infrastructure, people, and partnerships is all about supporting a vibrant, future-focused UK dairy industry rooted in provenance, built on trust, and proud of where we come from.

Contact us

Phone, email, social media, or even a good old letter. We are happy to hear from you.