The Choux Au Craquelin is essentially a crispy cream puff that consists of a craquelin layer and a choux pastry base. Craquelin is made of sugar, butter and flour that becomes crispy as it bakes over choux pastry. You can flavour the craquelin with flavourings such as matcha powder or cocoa powder, which will also give it distinct colours.
Once baked, you will have a light and hollow case that you can fill with any cream of choice (such as diplomat cream, chantilly cream, pastry cream, custard). For mine, I have used a chantilly cream with added flavouring such as melted chocolate and matcha powder.
These crispy cream puffs are very addictive and I highly recommend giving them a go if you are a fan of cream puffs.