Peel 4 Pears, cut lengthways into 4 (or 8) and remove the core.
2: Put into a saucepan, scatter 10 g vanilla sugar over and mix well.
3: Cover and leave to cook gently on low heat for 10 minutes.
4: Add 250 ml blackcurrant liqueur to the pear juice now accumulated in the pan.
5: Leave uncovered to poach for about 30 minutes until the liquid in the pan has reduced by around half and the pears are reaching "confit" stage. Leave to cool, then drain, but keep the juice.
6:
Assembling the cake
Preheat the oven to 390°F (200°C). Butter a loaf tin, then pour in half the moelleux batter.
7: Carefully arrange the drained pears in a tightly-packed and even layer.