You will also need a dish with a base measurement of 14cm, 6cm high, well buttered.
For full instructions visit Waitrose.com.
- 50g trimmed leek, halved, washed and thinly sliced
- 110g boiled potatoes
- 50g essential Waitrose Mature Cheddar, grated (1 tablespoon reserved for the topping)
- 25g butter
- 170ml tub soured cream
- 4 medium eggs, separated
- 1 pinch Cayenne pepper
- 1 pinch Salt
- 1 dessertspoon freshly grated Parmigiano Reggiano
Total time required
- Preparation time:
- Cooking time:
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