In a stand mixer bowl cream the butter

Add the sugar and let it combine

Add the vanilla extract and ammonia carbonate

Put half the flour in, when its incorporated, add the remaining flour

Make some balls with the dough (pictured were balls 1″ in diameter – if you prefer bite-size make them smaller) and place them on a baking tray covered with parchment paper. Make sure to provide space between the dough as they will melt. Unless you want to end up with a large cookie…

Bake at 300F for about 18-20 minutes, you want a light colouring forming around the edge ( not on the top of the cookies)

Transfer to a wire rack to cool for 15 minutes