4 apples, cooking varieties such as granny smith work well
1 kg celeriac, about 1 large
Dressing
2 egg yolks
1 tbsp cider vinegar
1 tsp mustard
300 ml sunflower oil
½ cup sour cream
tsp chopped dill
1 tbsp finely chopped parsley
Procedure
For dressing, combine egg yolk, vinegar and mustard in a bowl and whisk until pale and frothy, then, whisking continuously, drizzle in oil until combined. Add remaining ingredients and stir to combine. Season to taste with sea salt and freshly ground black pepper.
Peel celeriac and cut into 2cm pieces. Bring a large saucepan of salted water to the boil over high heat, add celeriac and cook until just tender, about 5-6 minutes. Drain and allow to cool.
Peel apples, core and thinly slice. Combine celeriac and apples with dressing and serve immediately.