Two-tone croissants: how to make them perfect for a super delicious breakfast!

INGREDIENTS

120 ml (½ cup) warm water;
12 g (1 ½ tbsp) fresh yeast;
400 g (3 ¼ cups) all-purpose flour;
100 g (½ cup) sugar;
30 g (2 tbsp) melted butter;
60 ml (¼ cup) warm milk;
1 egg;
7 g (1 tbsp) cocoa powder;
15 ml (1 tbsp) milk;
Hazelnut cream.