In a large bowl cream the butter and sugars together with an electric whisk until smooth and fluffy. Add the egg and mix well.
Sieve the flour with the baking powder, and cocoa powder. Add into the butter mixture and mix well to form a stiff dough. At first it looks like there is too much flour but whisk slowly and it will form stiff dough.
Add the soy sauce and Fold through the chocolate chips.
Tip the dough onto a piece of greaseproof paper. Roll the dough into a cylinder shape cm long and cm wide. Place in the fridge to firm up for at least 2 hours.
Line 2 baking trays with parchment paper. Heat your oven to 160c.
Unwrap the dough, cut into equal slices and place on the prepared trays allowing room to spread.
Bake for 12 – 15 minutes. The cookies should have risen and spread out.
They will still be soft when you take them from the oven so leave to firm on the tray for a few minutes before transferring to a wire rack to cool completely.
And don't forget, Asian-inspired meals are made for sharing, so get friends and family together for a feast.
