1. PreparationPreheat the oven to 180°C (top and bottom heat). Line a baking tray with baking paper.
2. Prepare doughRoll out the croissant dough. Cut the dough along the dotted line into three equal strips. Spread each strip with a tablespoon of wild garlic pesto.
3. Cutting & stackingCut each strip in half lengthwise. Place the halves on top of each other, pesto side inward. You now have three rectangular stacks. Cut each stack in half lengthwise again, so that you have six narrow strips.
4. Braiding & knottingCut each strip lengthwise again, leaving the end attached (like a book). Twist the two strips together to form a braid. Wrap it around your two fingers and thread the end under to form a knot.
5. Finishing & bakingPlace the buttons on the baking sheet. Brush them with the beaten egg yolk with a little milk. Bake for 5 minutes at 180°C, then lower the temperature to 150°C and bake for another 10 minutes until they are golden brown.
6. ServingServe warm, with some extra wild garlic pesto and a few wild garlic flowers for the finishing touch.