Made by Carwyn Adams on his family farm in Carmarthenshire in cast iron mounds, some dating back to 100 years. Perl Wen is a glorious and unique cross between a traditional Brie and a Caerffili. Caws Cenarth in Carmarthenshire use their farmhouse Caerffili recipe as a starting point for Perl Wen (the Welsh for ‘White Pearl’), which gives its soft centre a fresh citrus flavour with a hint of sea salt.