Mix all the dry ingredients with a whisk or spatula until you can't see any lumps from the cocoa powder.
Add the rest of the ingredients except the chocolate chips and sea salt and mix throughly
Add 100g of the chips into the dough.
Make small dough balls and then press them down a bit and lay them on top of an oven tray with baking paper. Top them with the extra chips and coarse sea salt. Press a bit to stick them.
Cook in a pre-heated oven at 180C for 10-12 min or until they cool down completely and are still gooey but don't fall apart.