1 large celeriac, washed thoroughly
3 tbsp finely chopped fresh chives
handful chive flowers (optional)
50驳/1戮辞锄 watercress, coarse stalks removed
freshly ground black pepper
2 tbsp extra virgin olive oil
200g/7oz fine sea salt
500g/1lb 2oz strong white bread flour, plus extra for dusting
100驳/3陆辞锄 cr猫me fra卯che
4 egg whites