Domino horseradish potato gratin
Irish 20 Mins Prep ยท 60 Mins Cook
- Preheat oven to 180 C, gas mark 4. Butter a medium-sized cast-iron pan.
- Slice the potatoes into very thin rounds using a mandolin or knife. Stack the slices in piles as you go. Pick the thyme leaves.
- Combine the creams and horseradish sauce along with the rest of the butter and salt in a bowl then pour over the potatoes. Sprinkle the thyme over the top and season well.
- Place the pan in the oven and bake for 1 hour until the potatoes are tender and cooked through, then put the grill on its highest setting and brown the top of the gratin until golden and caramelised.
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