Tetrim Teas was established as a not-for-profit company in 2021, with the aim of working with our community and local growers across Wales to develop functional tea products ethically and sustainably.

We are a family business - Mari manages the business, her nephew Steffan blends the teas, and Helen provides community support. More recently, we've been joined by a small team of mushroom growers and a project manager to oversee our InnovateUK projects.

The idea for Tetrim Teas came from Mari's experience selling Chinese health and wellbeing teas at her Cardiff health spa. She wanted to take that concept and build something rooted in Wales - using locally sourced ingredients, backed by academic research, and designed to strengthen the local community.

"As part of this work, we discovered a family business on Anglesey that grew rhubarb, where much of the root is discarded each year. We chose this local supply of rhubarb root as the main ingredient for our first tea blend, bringing the product's carbon footprint down considerably."

The tea is also blended with quality green tea from Dartmoor Estate Tea. We continue to research more local suppliers for all our ingredients and to build a local supply chain across every aspect of the business.

Today

We've expanded our wellbeing collection with two distinctive Lion's Mane mushroom blends — one energising with chilli, ginger and cardamom, the other comforting with Welsh heritage apple and cinnamon — alongside our newest Spring Hedgerow Tea, made from local Welsh botanicals.

But we're not stopping there. We now grow our own Lion's Mane mushrooms right here in Carmarthenshire, bringing the entire journey from soil to cup closer to home, thanks to our mushroom growing team. This means fresher, more potent mushrooms, a deeper connection to the Welsh landscape, and full control over the quality in every blend, with regular testing of vitamin D levels to ensure the best benefits.

It's the natural next step for a company rooted in Welsh terroir and committed to authentic, locally sourced wellness.

As a company rooted in our community, we have established a number of community projects.
Tŷ Te Trimsaran Tea Hub has weekly meetings in our home village of Trimsaran, a safe place for people to come together over a cup of tea, and to chat or learn Welsh.
A tea growing project in the village school has involved the Eco Committee growing tea plants and will make their own flavoured teas once the plants are ready.