50g/1¾oz plain flour (gluten free if necessary)
â…› tsp baking powder (gluten free if necessary)
â…› tsp bicarbonate of soda
15g/½oz soft dark brown sugar
25g/1oz caster sugar
10g/â…“oz cocoa powder
â…› tsp fine sea salt
¼ tsp sea salt flakes
¼ tsp vanilla extract
25g/1oz dark chocolate chips
50g/1¾oz soft unsalted butter (or dairy-free baking block, if you want these to be vegan)