Preheat oven to 180°C (350°F). Grease and line a 20 cm round cake tin.
Wash, dry, and chop the strawberries. Pat dry and toss lightly with a little flour if desired.
In a large bowl, whisk eggs and sugar until pale and slightly frothy.
Add milk, oil, sour cream or Greek yoghurt, and vanilla. Whisk until smooth.
Sift in flour and baking powder. Fold gently until just combined.
Fold in the chopped strawberries.
Pour batter into the prepared tin and smooth the top.
Bake for 35–40 minutes, or until golden and a toothpick inserted in the centre comes out clean.
Cool in the tin for 10 minutes, then transfer to a wire rack.
Serve warm or at room temperature.