Making the sweet pastry In a large bowl, with a spatula or wooden spoon, mix the soft butter and icing sugar to a cream; then beat in 2 of the egg yolks. Add the flour and, with your fingertips, rub the butter mixture and flour together to achieve a crumbly texture. Add the water and press the mixture together to form a ball. With the palms of your hands, knead the pastry on a lightly floured work surface until it is blended (maximum 30 seconds – do not overwork the pastry or it will be hard and lose its crumbly texture). Flatten the pastry slightly with the palm of your hand, wrap in cling film and refrigerate for 30 minutes (this helps the dough lose its elasticity).