Mix together the flour and salt in a large bowl.
225 g self raising flour, pinch salt
Rub in the butter gently. It doesn't have to be mixed very fine.
55 g butter
Stir in the sugar then the milk to make a soft dough.
30 g caster sugar (superfine sugar), 150 ml milk
Knead gently.
Add in the frozen mixed berries and lemon zest, and press the fruit into the dough.
160 g of frozen mixed berries, lemon zest
Form the mixture into a round disc, about two or three centimetres thick. Slice into six triangles by cutting in half and then twice more again, as shown in the image in the post.
Transfer the triangles on a lined baking tray. Brush with a little milk.
milk
Cook for 20-25 minutes at 180℃ / 350℉.
Remove from the oven and try to stop yourself eating them all warm!