Preheat the oven to 400°F (200°C). Line a baking sheet with a silicone baking mat and put it in the oven while it is preheating.
In a large bowl, combine flour, salt, baking powder, and sugar. Add the butter and use a pastry cutter, a fork, or your fingers to work it in until the mixture looks like fine crumbs.
Heat up the milk on the stove or the microwave until warm, but not hot. Add the vanilla and lemon juice, then set aside for a moment.
Add the milk mixture to the dry mixture and combine them quickly with a fork.
Pour the dough onto a lightly floured surface. Sprinkle the dough with flour, then fold the dough over a few times until smooth. Don't overwork the dough. Pat into a round disc about 1.5-inch (4cm) high.
Use a 2-inch round biscuit cutter to cut out scones. Press scraps together into a round and repeat until all the dough is used. You should get 6–8 scones.
Brush the tops of the scones with egg wash, then carefully place them onto the hot baking sheet.
Bake for 10–15 mins until golden on top. Serve topped with jam and clotted cream.
Video
Notes
If freezing, freeze once cool. Defrost, then put in a low oven for a few minutes until warm.