Mix 125 g flour, buckwheat flour, baking powder, baking soda and vanilla. Peel ginger and grate finely. Whisk the egg in a large bowl. Add butter, milk, crème fraîche and syrup, mix everything with the whisk of the hand mixer. Add flour mixture and stir with a wooden spoon only briefly until all ingredients are mixed. Dust 125 g frozen blueberries with 1 teaspoonful of flour. Fold into the dough with ginger
Line the recesses of a muffin tray (12 recesses) with 1 paper baking tin each. Spread the dough into the baking cups. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 25-30 minutes. Take the muffins out of the oven, let them cool down in the muffin tray for about 20 minutes
In the meantime, allow 75 g blueberries to thaw in a mixing bowl for the glaze. Add icing sugar and puree. Decorate the muffins with the icing, let them dry
Waiting time approx. 50 minutes