Mix all dry ingredients, flour, baking powder, salt and caster sugar into a bowl, and sift all together. Add the oat bran and mix a little more.
Separately, into a different bowl, whisk together all the liquid ingredients, the eggs, crème fraîche, ricotta cheese, milk, vanilla essence and half of the melted butter.
Put the soda bicarbonate in a bigger spoon and pour over the vinegar. Mix well and add to the liquid mixture.
Pour the liquid mixture into the dry mixture and mix initially with a fork and then, once mixed, use an electric mixer and mix until the batter is nice 'n smooth. Put aside for a few minutes.
Meanwhile, heat up on a medium fire a non-stick pan or two pans for quickness. Brush on some melted butter, add 3-4 little batter patches with a ladle or a big spoon. When the top of the pancake begins to bubble, turn it over and cook until both sides are golden brown.
Repeat this until the batter is all used up. Eat them pretty much straight away.
Serve with fresh berries and ice cream, maple syrup and butter or jam and crème fraîche or simply pour over indulgently a good chocolate sauce.