Sift flour, baking powder, sugar, and salt into a large bowl.
450 grams plain white flour, 25 grams castor sugar, 2 teaspoons baking powder, pinch salt
Grate the frozen butter with a grater directly into the flour mixture. Alternatively one can cut it with your fingers or a pastry cutter until the mixture looks like coarse breadcrumbs.
90 grams butter
Add raisins or currants, or sultanas if using. Lightly rub the butter and raisins into the flour mixture.
Raisins/Sulatanas
In a small bowl, beat the eggs and add milk to it.
2 small eggs, 225 ml milk
Make a well in the center of the dry mix and pour in most of the milk mixture leaving a little aside.
With your hand, in claw shape, mix it lightly. Just mix until it all combines. We need soft, shaggy dough.
If the dough appears dry, add more milk and egg mixture.
Do not overmix as that will lead to hard scones.