750g Russet or Maris piper potatoes peeled & thinly sliced
250g celeriac peeled & thinly sliced
300 ml Whipping cream
200 ml full-fat milk
2 cloves Garlic crushed
2 sprigs fresh thyme
1 Bay leaf
Salt & ground white pepper
200g Swiss gruyere cheese finely grated
Introduction
A delicious, luxurious treat and an alternative to mash or roast potatoes
Method
Preheat oven 180°C /160°C fan assisted (gas 4).
Infuse milk & cream with garlic, thyme & bay over a
gentle heat for 2 minutes, season highly with salt & pepper
then leave to stand a little before passing through a fine
strainer.
In a bowl mix together the celeriac, potato & infused
liquid then layer into a dish alternating layers with a sprinkling
of cheese & liquid until all the potatoes & celeriac is
used up.
Top with a final layer of cheese & liquid then place in the
centre of the oven.
Bake for approximately 1 hour 15 minutes pressing gently every
after 15 minutes.
If the top is getting too dark reduce oven temperature a
little.
The gratin should be tender when pierced with a skewer.
Leave to rest a few minutes before serving.
Note:The gratin can be prepared up to step five in the morning
& chilled ready for cooking.