Preheat your oven to 150°C/300°F.
Place parchment in a cake. In a small bowl, mix together the flaxseed with water.
In a large bowl add the dry ingredients.
Mix everything well. Add the yogurt, the mylk, flaxseed and the oil and fold them gently into the dry ingredients until no flour pockets remain.
Fill the tin with the batter, it should be thick but still pourable.
Sprinkle the red berries on top and place in the preheated oven for approx. 60 minutes, until a toothpick comes out clean.
Let it cool down on a grid and serve.