In a bowl, whisk yogurt with milk and lemon juice and leave the mixture to sit for 10 minutes.
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Meanwhile, mix the flour with oats, baking soda, and salt in another bowl.
Then, add maple, raisins and the prepared buttermilk. Briefly work all into a soft dough, transfer it onto a floured worktop, and shape it into a loaf.
Score a cross in the centre of the bread and bake it for 40 min at 200°C (390°F).
Once ready, transfer the bread onto a wire rack to cool down.