Ingredients
- 350g self-raising flour, plus more for dusting
- ¼ tsp salt
- 1 tsp baking powder
- 85g butter, cut into cubes
- 3 tbsp caster sugar
- 175ml milk
- 1 tsp vanilla extract
- squeeze lemon juice (see Know-how below)
- beaten egg, to glaze
- jam and clotted cream, to serve