01 -
Preheat the oven to 232°C.
02 -
In a large bowl, whisk together plain flour, salt, granulated sugar, and baking powder until well blended.
03 -
Pour cold milk and add blueberries to the dry mixture; stir until just combined.
04 -
Break frozen butter into small chunks and distribute evenly over the dough.
05 -
Gently fold and knead the dough to incorporate the butter uniformly without overworking.
06 -
Roll dough on a floured surface to a thickness between 0.3 and 0.6 centimetres. Cut out biscuits using a biscuit cutter; aim for approximately six biscuits.
07 -
Arrange biscuits on a parchment-lined baking tray and bake for 7 to 12 minutes, or until the tops are golden brown.
08 -
Melt 14 grams (1 tablespoon) butter and brush over the warm biscuits immediately after baking.
09 -
In a small bowl, mix powdered sugar, water, vanilla extract, and lemon juice until smooth. Drizzle glaze evenly over the warm biscuits.