Chocolate Chip Cookies

1) Preheat the oven to 180C/Gas 4. In a large mixing bowl, combine the cold butter, dark brown sugar, light brown sugar, granulated sugar and espresso with a hand mixer. Mix at slow speed for 30 seconds and then increase speed until the mixture is fluffy, about 6 minutes. Lower the speed and add the eggs 1 at a time. Add the vanilla and mix until all ingredients are incorporated.

2) In a separate bowl, whisk together the flour, bicarbonate of soda and salt. Add the flour mixture to the butter and sugar mixture in batches. Stir with a spatula until well blended. Fold in the chocolate chips or chunks and spoon the dough onto 2 greaseproof paper-lined baking sheets, at least 2.5cm apart.

3) Bake for 14 to 15 minutes. Rotate the baking sheet half way through so that the biscuits bake evenly. Remove the baking tray from the oven and transfer to a wire rack to cool.