1 large orange, zest only
300²µ/10Β½΄Η³ϊ raspberries
125²µ/4Β½΄Η³ϊ caster sugar
1–2 tbsp demerara sugar
butter, for greasing and buttering the brioche
400ml/14oz double cream
4 free-range eggs
400ml/14oz milk
10–12 slices square brioche loaf