Combine flour, baking powder, bicarbonate of soda, sugar, and salt in a large bowl.
250 g Plain Flour, 2 tsp Baking Powder, ½ tsp Bicarbonate of Soda, 2 tbsp Caster Sugar, ½ tsp Salt
In a separate bowl, whisk the buttermilk, eggs, melted butter, and vanilla extract.
475 ml Buttermilk, 2 Large Eggs, 60 g Unsalted Butter, 1 tsp Vanilla Extract
Pour the wet mixture into the dry ingredients, stirring gently until just combined. Do not overmix; a few lumps are perfectly fine.
Heat a non-stick frying pan over medium heat and lightly grease it with butter or oil.
Pour a ladleful of batter onto the pan. Cook until bubbles form on the surface and edges look set, then flip and cook for another minute or two until golden brown.