Step 1

Preheat the air fryer to 200C (400F).

Step 2

Place the dry ingredients into a large mixing bowl and give them a mix.

Step 3

Add the chilled cubed butter to the mixing bowl and rub it in with your hands until you get fine breadcrumbs form.

Step 4

Stir in the grated cheese (reserving a few heaped tablespoons for the tops).

Step 5

Heat the milk in the microwave for 20 seconds, squeeze in a little lemon juice (about ¼ teaspoon) and leave it to stand for 2-3 minutes. Pour the soured milk into the mixing bowl and use a metal dinner knife to stir it in.

Step 6

Once the scone dough has started to come together, use your hands to bring it together into a ball.

Step 7

Lightly flour your work surface then knead the scone dough for a few seconds to cover it in flour. Shape the dough into a disc about 3 cm thick with your hands then stamp out 5 scones with a 5cm cookie cutter. You'll need to keep reforming the dough into a disc with your hands until you have used it all up.

Step 8

Using a pastry brush, glaze the tops of the scones with milk then sprinkle over the reserved grated cheese.

Step 9

Place the scones in your air fryer basket and air fry for 8 minutes until risen and golden brown.