Cheese Profile

Perl Wen: Wales's Caerphilly-Brie Hybrid Cheese

Perl Wen means White Pearl in Welsh. Made by Caws Cenarth from a farmhouse Caerphilly recipe ripened brie-style, it's organic, vegetarian, and citrus-sharp.

A whole round of Perl Wen with its white bloomy rind - Perl Wen | KnowTheCheese
PERL WEN QUICK FACTS
OriginGlyneithinog Farm, Carmarthenshire, Wales
MilkOrganic pasteurised cow's milk
TextureSoft, creamy, runnier near end of shelf life
RindWhite, bloomy
AgingShort-ripened, best near use-by date
FlavorFresh and citrus-forward with a hint of sea salt
AvailabilityCaws Cenarth direct; UK specialty cheesemongers

Perl Wen means "White Pearl" in Welsh, and it is built from two different cheese recipes rather than one. A Caerphilly curd goes in; a brie-style bloomy rind comes out.

That hybrid method is the reason it tastes like neither cheese exactly, and understanding it is the fastest way to know what to expect.

What Is Perl Wen Cheese?

It starts from the maker's own farmhouse Caerphilly recipe, the same curd base used for that crumbly Welsh classic.

Instead of pressing and maturing it the Caerphilly way, though, the curd is mould-ripened brie-style, developing a white bloomy rind around a soft centre.

Caerphilly on its own is firm and crumbly, built to hold its shape. Mould-ripening interrupts that path entirely, softening the interior from the outside in the way a brie develops, so the finished cheese never sets into the dry, crumbly body Caerphilly is known for.

The result sits genuinely between the two starting points rather than a rebrand of either.

Who Makes Perl Wen?

Caws Cenarth makes it, founded in 1987 by Gwynfor and Thelma Adams at Glyneithinog Farm, in the valley of the river Cych in West Wales.

A green river valley in rural Wales near where Perl Wen is made - Perl Wen | KnowTheCheese
Glyneithinog Farm sits in the valley of the river Cych in West Wales.

The business began specifically in response to milk quotas imposed on Welsh dairy farms, turning surplus milk into cheese rather than a problem. It drew on six generations of family cheesemaking behind them already, reviving a recipe passed down specifically from Carwyn Adams's great-grandmother rather than starting from a modern formula.

Before the farm business existed, Thelma had already proven the idea could work: she won a national UK "Edible Ideas" competition in 1986, the year before she and Gwynfor formally set up Caws Cenarth.

Thelma Adams went on to become a prominent figure in the wider revival of Welsh artisan cheesemaking, not just within her own dairy. That reputation is part of why Caws Cenarth's name carries weight on a Welsh cheeseboard beyond this one product.

Their son Carwyn now leads cheese development. Other cheeses from the same maker carry real recognition, including Golden Cenarth's Supreme Champion title at the 2010 British Cheese Awards, though that specific award belongs to a different cheese in their range rather than to Perl Wen itself.

Golden Cenarth's own origin makes an interesting contrast with Perl Wen's deliberate two-recipe method. Carwyn reportedly discovered it by accident, after noticing an out-of-date piece of the farm's own Caerphilly starting to redden and soften at the rind, then chose to nurture that unplanned process into a cheese in its own right rather than treating it as spoilage.

That distinction matters for expectations. Perl Wen has its own reputation as a well-regarded Welsh soft cheese, but the trophy case belongs to the wider Caws Cenarth range rather than to this cheese by name.

The maker's blue cheese, Perl Las, took the Best Welsh Cheese title at the 2025 World Cheese Awards, which is the most recent evidence that Caws Cenarth's reputation keeps being renewed rather than resting on a single older win.

Is Perl Wen Vegetarian?

Yes. The official current specification lists vegetarian rennet alongside organic pasteurised cow's milk.

That means it can be bought without checking further if avoiding animal rennet is a requirement rather than just a preference.

Is Perl Wen Pasteurised, and Can You Eat It Pregnant?

It is made from pasteurised milk, but that alone does not settle the pregnancy question for this style of cheese.

UK guidance places bloomy white-rind soft cheese in the same avoid-unless-cooked category whether or not the milk was pasteurised. The concern is the rind environment itself, not the milk it started from.

CHECK THE LABEL
Perl Wen is a bloomy white-rind soft cheese, which current UK guidance treats as needing thorough cooking in pregnancy regardless of pasteurisation. Follow current local guidance for the specific product you have.

Baked into pastry or melted through a dish resolves the question, and is also one of its more popular serving styles regardless.

What Does Perl Wen Taste Like?

Expect a fresh, citrus-forward flavour with a hint of sea salt underneath, rather than the earthy funk some bloomy-rind cheeses carry.

Cut wedge of Perl Wen showing its creamy interior against the white rind - Perl Wen | KnowTheCheese
The centre turns noticeably runnier the closer the cheese gets to its use-by date.

The texture starts creamy and buttery, and it turns noticeably runnier and more intense the closer it gets to the end of its shelf life. A wedge eaten near its use-by date is at its best, not past it.

How Do You Serve Perl Wen?

Beyond a plain cheeseboard slice, it works well in summer baguettes and paninis, where the runnier texture near ripeness spreads easily.

Baked in pastry is another common route, and it pairs particularly well with caramelised onions and a glass of Sauvignon Blanc. For the broader principles behind matching wine to cheese, the reasoning goes well beyond just this one combination.

On a wider spread, it also holds its own on a mixed board rather than needing to be the only thing on the plate; building a cheese board around a runnier, ripe cheese like this one has its own layout considerations worth checking first.

Where Can You Buy Perl Wen Cheese?

It is sold in a standard 200g size, sized for a single cheeseboard or a couple of sittings rather than a larger household block.

BUYING TIPS
Standard size
200g rounds.
UK specialty retailers
Welsh Cheese Company, Cheesegeek, British Fine Foods.
Order direct
Caws Cenarth's own site is an option too.
Buy close to eating it
It is best nearer its use-by date, so buy with a specific occasion in mind rather than for long storage.

UK specialty retailers including the Welsh Cheese Company, Cheesegeek and British Fine Foods stock it, alongside ordering directly from Caws Cenarth. It is not a general supermarket cheese, so a specialty order is the realistic route.

What to Use Instead of Perl Wen

A plain Brie gives the same bloomy-rind creaminess, though it lacks the citrus sharpness Perl Wen's Caerphilly base brings.

A young Caerphilly keeps that sharper Welsh tang, but loses the soft ripened centre entirely, since it is never mould-ripened the way Perl Wen is.

Neither one replaces both halves at once, which is exactly what makes Perl Wen worth seeking out specifically rather than treating as swappable with either.

SOURCES & REFERENCES


1.
Pong Cheese, 2026 industry
Used for Thelma Adams's 1986 national Edible Ideas competition win, the great-grandmother-recipe detail, Golden Cenarth's accidental discovery by Carwyn Adams, and the 2010 Supreme Champion award year.

2.
Nation.Cymru, 2026 industry
Used for Caws Cenarth's Perl Las blue cheese winning Best Welsh Cheese at the 2025 World Cheese Awards.

3.
Caws Cenarth, 2026 industry
Used for the official specification: organic pasteurised cow's milk, vegetarian rennet, soft creamy texture, citrus and sea salt flavour, and the 200g size.

4.
The Cheese Atlas, 2026 industry
Used for the White Pearl name translation, the Caws Cenarth founding story (Gwynfor and Thelma Adams, 1987, milk quotas, six generations, Glyneithinog Farm in the Cych valley, son Carwyn's current role), the Caerphilly-to-brie hybrid production method, and the baguette, panini, pastry and Sauvignon Blanc serving suggestions.

5.
NHS, 2026 Gov
Used for the guidance that bloomy white-rind soft cheese should be cooked thoroughly in pregnancy regardless of pasteurisation.