Wash, cut and core the apple. Mix with 150 ml soy drink in a blender.
Mix the flour, baking powder, date flour and cornflour. Squeeze the lemon and add.
Mix the lupin flour with the sparkling water in a cup and add to the mixture.
Add the soy yogurt and apple liquid and mix well.
Pour a third of the batter into a separate bowl. Mix the cocoa powder with 2 - 3 tbsp of soy drink into this batter.
Line a loaf tin with baking paper.
Then pour in a layer of the light-colored batter first.
Pour some of the dark batter on top.
Using a fork, lightly spread the dark batter and pull it through the light batter in a spiral. Then add another layer of the light-colored dough. And again some of the dark dough. The end should be the light-colored dough. You can also pour in the light-colored batter first, add the dark-colored batter on top and then carefully pull everything through in a spiral with a fork.
Preheat the oven to 200 degrees Celsius top/bottom heat.
Bake the cake for approx. 60 minutes. After 5 - 10 minutes, cut into the middle with a knife. Brush with soy drink after baking.
