Combine flour, baking powder, sugar, and salt in a bowl.
Cut cold butter into small pieces and mix with your hands until it resembles coarse crumbs.
Cut open an Earl Grey tea bag and add the tea leaves, then mix.
Add the egg and milk, and bring the dough together into one mass.
Flatten the dough and cut it into triangular shapes.
Place on a baking sheet and bake at 180°C (356°F) for 20-25 minutes.