3cm/1in fresh ginger, thinly sliced
400g/14oz rhubarb, chopped
200g/7oz caster sugar
100²µ/3½´Ç³ú caster sugar
100²µ/3½´Ç³ú pistachios, shells removed and blitzed
50g/1¾oz slivered pistachios
100²µ/3½´Ç³ú butter
400g/14oz crème fraîche
2 free-range eggs
½ brioche loaf