Use electric whisk to make if fluffy and then place in the fridge for a while to set. (coffeeandvanilla.com)
Put the butter and sugar in a bowl and, either whisking by hand or using a hand - held electric whisk, cream together until light and fluffy. (styleathome.com)
Step 3) Tip into a bowl and add the remaining sugar, butter, eggs, flour and baking powder and beat using a hand - held electric whisk until smooth and creamy. (idealhome.co.uk)