Thicker than the traditional British pancake or French crepe, and bigger than a Scotch pancake or pikelet, Welsh 'crempog' or 'crempogau' pancakes are more akin to their fat, fluffy American counterparts. While early crempog recipes are believed to have used yeast, this recipe - an adaptation of a recipe by Aaron Broster available at VisitWales.com - uses bicarbonate of soda as the raising agent. Traditionally, crempogau would be served with nothing more than a knob of Welsh butter, a sprinkle of sugar and, if you were lucky, a dollop of treacle. However, crempogau taste great paired with a variety of different toppings.