Over a piece of parchment paper, sift together flour, bicarbonate soda and salt. Set aside.

In the bowl of a stand mixer, beat the butter on medium until lightly whipped and add the sugars. Beat until light and fluffy. Add the eggs one at a time to the sugar mixture, beating after each addition. Once incorporated, add the vanilla extract. Ensure that you also stop the mixer occasionally to scrape down the sides of the bowl.

Reduce the mixing speed to low and slowly add the flour mixture. Beat until well mixed.

Add the chocolate chips and give one last quick mix until well dispersed through the batter.

Using a scoop or a spoon drop dollops of dough onto the prepared baking sheets, leaving about 2" (4cm) apart. Bake for around 10-12 minutes until beginning to brown. Once removed from the oven, allow to cool on the tray for a couple of minutes before using a spatula to transfer cookies to a cooling rack. Repeat the baking process until you have used up your batter.