Place a stick of butter into the freezer for 30 minutes before starting.

Preheat the oven to 425°F.

Place the flour, baking powder, sugar and salt into a medium mixing bowl and mix together with a whisk.

Take the butter out of the freezer and using a grater, grate the butter into the flour mixture. Stirring a little in-between so that the butter doesn't stick together.

Pour the milk into the flour mixture and stir with a spoon.

When the dough mixture has come together somewhat (the dough will be very sticky) turn out onto a lightly floured surface and using your floured hands shape into a rectangle. Pushing down, to about a 1" thickness.

Reach over and take one side of the rectangle and fold it over to the other corners. Push down again and create another rectangle.

Using a long sharp knife cut the rectangle in half in the opposite direction then place one half on top of the other half.

Repeat the above steps 2 more times.

Using a 2-½" cookie cutter or biscuit cutter cut down into the dough (do not twist the cookie cutter, just pull straight back up and out.

Place the biscuit onto a prepared cookie sheet and cut out more biscuits. You might be able to make about 4 or 5 biscuits but then you'll have to try to mold together another using the off-cuts.

Bake the biscuits in the oven for 12 minutes (or until a light golden brown). Then remove and brush with melted salted butter.