Crempog

The crempog is a Welsh pancake made with flour, buttermilk, eggs, vinegar and salted butter. Traditionally made on bakestones or griddles, the crempog is one of the oldest recipes in Wales. They are also known as ffroes, pancos and cramoth and are normally served thickly piled into a stack and spread with butter. It is traditionally served at celebrations in Wales, such as Shrove Tuesday and birthdays. The word "crempog" has its origins in the Welsh language, but is similar to the Breton word krampouezh, which is also a type of pancake. Comparisons are often drawn between the two Celtic languages which share ancestry in the Brittonic language, though the krampouezh is more dainty than the crempog and is today closer to a crêpe than a pancake.

Source: Wikipedia