There are hundreds of recipes for this delicious treat, this is just one of many but my favourite as its rich and truly chocolatey.
                                    Prep: 15 minutes
Cook: 10 minutes (plus time for preparing dashi 20 minutes or use instant
        dashi)
                                    Prep: 20 minutes
Cook: 15-30minutes
                                    Prep: 5 minutes
Cook: 10-15 minutes