Mix all the dry ingredients in a bowl and make a hole in the center.
Add the wet ingredients at the center and whisk from the center, adding the dry ingredients little by little to prevent lumps from forming.
Let the dough rest for 30min in the fridge.
Place a bit of butter on a non-stick 25cm/10in diameter pan over medium heat and add about ⅔ ladle of the batter. It's easier if you place the batter to one side and spin the pan around to cover it completely.
When the edges become crispy, unstick a corner and flip it with your two hands carefully.