In a bowl, mix together flour, sugar, baking powder, and salt.
Cut cold unsalted butter into small pieces, add to the bowl, and quickly rub with your hands until the mixture becomes crumbly.
Add whipping cream and milk, mixing until the dough just comes together into one lump.
Flatten the dough, fold it like a letter in thirds, then shape it to a 2cm thickness.
Cut out the dough with a round cutter.
Place the dough rounds on a baking sheet lined with parchment paper.
Bake in a preheated oven at 180°C (356°F) for 20–25 minutes.