Step 1: Prepare the Oven

Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.

Step 2: Make the Scone Dough

1. In a large bowl, sift together the flour and baking powder.
2. Add the sugar and cold butter pieces.
3. Using your fingertips, lightly rub the butter into the flour mixture until it resembles coarse crumbs. Don’t worry about some butter lumps remaining – they’ll create flaky layers!
4. Add the kefir, vanilla extract, and salt.
5. Mix gently with your hands or a spoon until the dough just comes together. The dough should be sticky – resist the urge to overmix!

Step 3: Shape and Bake

1. Turn the dough onto a piece of parchment paper.
2. Gently pat or roll to about ¾-inch (2cm) thickness.
3. Using a 2½-inch (6cm) round cutter or glass, cut out circles.
4. Place scones on the prepared baking sheet, leaving space between each.
5. Bake for 18-20 minutes until golden brown and well-risen.

Step 4: Prepare Strawberry Sauce

1. While scones are baking, place strawberries in a small saucepan.
2. Heat until strawberries soften and release their juices.
3. Add jam and cook for 1 minute.
4. Sift cornstarch directly into the mixture, stirring constantly.
5. Add vanilla extract and cook until sauce reaches desired consistency.
6. Let cool slightly before serving.