350gflour(This recipe is very thick, if you prefer it not so thick just use 300g flour.)
4tbspcold butter
¼tspsalt
Instructions
Add the chilled butter to the bowl. The butter should be very cold for a lighter crumb. Use your fingertips to quickly and lightly rub the flour and butter together until it resembles fine breadcrumbs. Lift your fingers above the bowl while rubbing to help aerate the mixture.
Bring the milk to a boil slowly, when boiling add a small handful at a time of the flour crumbs to the milk, spreading evenly while whisking continuously.