Wash the strawberries, remove the stems, and chop them finely.
Put cake flour, baking powder, sugar, and salt into a bowl and mix.
Add cold butter and mix with your hands until the texture becomes crumbly, like streusel.
Add milk and egg, and mix to complete the dough.
Fold the strawberries into the dough.
Shape the dough into round balls and place them on a baking sheet.
Bake in a preheated oven at 180°C for 20 minutes.