Hi, this might be an obvious question but I am relatively new to baking so apologies if it's a silly question. I use a basic Victoria sponge recipe when I bake but was wanting to make a chocolate version and wondered if I would need to adjust any quantities when I add cocoa powder.
I use -
225g flour
225g caster sugar
225g butter
Would I need to add less flour if I'm adding cocoa?? And how much cocoa would I need to use? TIA