Pwll Ddu (Black pool) named after the Pwll Du Tunnel which was the longest horse-powered tramway tunnel to be built in Britain at The Pwll Du limestone quarry, Blaenavon. The cheddar is flavoured with mustard, leeks and The Reverend James Welsh ale which gives a mouth-watering savoury bite. Combined with a slice of Welsh Black beef & salad in a wholemeal malted roll it provides a wholesome tasty meal. For something hot, serve a medallion of the cheese upon a steak or piece of gammon, or just melt onto a slab of crusty bread for the raditional Welsh rarebit. The cheese is coated in a neutral wax allowing the texture of the mustard grain to shine through.